The Role of Modified Radical Hysterectomy in Endometrial Carcinoma

Improvement of the treatment results in patients with endometrial carcinoma has been achieved by a multidisciplinary approach including surgery, chemotherapy and radiotherapy, similar to the case for many other carcinomas. Although total hysterectomy/bilateral salpingo-oophorectomy (TH/BSO), pelvic and para-aortic lymphadenectomy and peritoneal cytology are often required, cases with early carcinomas predominate among cases of endometrial carcinoma, and TH/BSO alone is sufficient to achieve a favorable prognosis in such cases. The recommended surgical procedure for the staging of a patient with endometrial carcinoma clinically confined to the fundal portion of the uterus includes peritoneal cytology and TH/BSO with pelvic and para-aortic lymphadenectomy (National Comprehensive Cancer Network, 2011). For operable patients with cervical involvement, peritoneal cytology and radical hysterectomy/bilateral salpingooophorectomy with pelvic and para-aortic lymphadenectomy should be considered. However, radical hysterectomy always has a major adverse effect with dysuria. Improvement of the treatment results and quality of life (QOL) can also be expected from modified radical hysterectomy performed in appropriately selected patients. One of the advantages of modified radical hysterectomy is that it can be switched from radical hysterectomy in high-risk patients in terms of the age, obesity and presence of medical complications. For operable patients with intra-abdominal disease, surgical procedure includes peritoneal cytology, TH/BSO with pelvic and para-aortic lymphadenectomy, and maximal debulking. The pathologic information obtained also provides an optimal basis for the selection of adjuvant therapy. Therefore, complete surgical staging including pathologic and prognostic data on which to base decisions regarding adjuvant therapy should be required for all patients who do not have medical or technical contraindication to lymphadenectomy.


Introduction
Improvement of the treatment results in patients with endometrial carcinoma has been achieved by a multidisciplinary approach including surgery, chemotherapy and radiotherapy, similar to the case for many other carcinomas.Although total hysterectomy/bilateral salpingo-oophorectomy (TH/BSO), pelvic and para-aortic lymphadenectomy and peritoneal cytology are often required, cases with early carcinomas predominate among cases of endometrial carcinoma, and TH/BSO alone is sufficient to achieve a favorable prognosis in such cases.The recommended surgical procedure for the staging of a patient with endometrial carcinoma clinically confined to the fundal portion of the uterus includes peritoneal cytology and TH/BSO with pelvic and para-aortic lymphadenectomy (National Comprehensive Cancer Network, 2011).For operable patients with cervical involvement, peritoneal cytology and radical hysterectomy/bilateral salpingooophorectomy with pelvic and para-aortic lymphadenectomy should be considered.However, radical hysterectomy always has a major adverse effect with dysuria.Improvement of the treatment results and quality of life (QOL) can also be expected from modified radical hysterectomy performed in appropriately selected patients.One of the advantages of modified radical hysterectomy is that it can be switched from radical hysterectomy in high-risk patients in terms of the age, obesity and presence of medical complications.For operable patients with intra-abdominal disease, surgical procedure includes peritoneal cytology, TH/BSO with pelvic and para-aortic lymphadenectomy, and maximal debulking.The pathologic information obtained also provides an optimal basis for the selection of adjuvant therapy.Therefore, complete surgical staging including pathologic and prognostic data on which to base decisions regarding adjuvant therapy should be required for all patients who do not have medical or technical contraindication to lymphadenectomy.
There is no definitive data regarding the effectiveness of adjuvant chemotherapy in patients with uterine confined or intra-abdominal disease.The role of adjuvant chemotherapy in invasive high-grade tumor confined to the uterine body is the subject of current studies.Postoperative radiotherapy for patients with intermediate risk or high risk early stage endometrial carcinoma has been performed to prevent locoregional recurrence, however it did not increase overall survival (Creutzberg et al., 2000;Keys et al., 2004;Blake et al., 2008;Nout et al., 2010).Despite a traditional use of adjuvant radiotherapy, stage I/II patients with high risk factors may have a compromised survival due to extrapelvic metastatic disease, suggesting the need for effective systemic adjuvant therapy.Adjuvant chemotherapy may reduce the rate of distant recurrence in endometrial carcinoma.Therefore, it is reasonable to consider adjuvant chemotherapy for high risk endometrial carcinoma.Abdominal total hysterectomy is a basic gynecological surgical technique that beginners should try and master, and it is generally an extrafascial procedure.After obtaining full mastery over total hysterectomy, gynecologists in training should proceed to modified radical type II hysterectomy (Bidus & Elkas, 2007;Jones. 2008;Randall et al., 2009), a procedure positioned in between total hysterectomy and radical hysterectomy, with or without lymphadenectomy This form of surgery is indicated for stage Ia1-Ia2 uterine cervical carcinoma and stage Ib-Ic, IIa, and IIb (with slight infiltration of the cervical stroma) endometrial carcinoma.Complications of this procedure include bleeding and damage to the intestines, ureter and bladder.Due caution is necessary to avoid these complications or organ injuries, and it is important to extirpate the uterus together with the cardinal ligaments and to remove the vaginal wall with an extra 1.5-2.0cm margin.There is uncertainty as to whether modified radical hysterectomy in high-risk endometrial carcinoma reduces locoregional recurrence.So, we performed modified radical type II hysterectomy including systematic pelvic and para-aortic lymphadenectomy in 284 stage I-IV endometrial carcinomas to prevent locoregional recurrence, patients with high risk factors (stages IC/II/III/IV) were treated by adjuvant chemotherapy.
The purpose of this study is to assess the role of modified radical hysterectomy in endometrial carcinoma, and identify the multivariate independent recurrence risk factors during past 10 years.

Modified radical hysterectomy (Hiura & Nogawa, 2011)
In our method of modified radical type II hysterectomy, the anterior procedure following development of the paravesical and pararectal spaces involves retraction of the ureter in a lateral direction after dissecting the anterior layer of the vesicouterine ligament.However, the posterior layer of the vesicouterine ligament is not seprated.As the posterior procedure, the cardinal ligament is clamped en bloc with the posterior layer of the vesicouterine ligament and the deep layer of the sacrouterine ligament after dissecting the sacrouterine ligament, and the vaginal wall is resected with an extra 1.5-2.0cm margin.The uterus is resected by dividing as much as possible the anterior uterine support and vaginal wall from the cervix.Another characteristic of this technique is that more of the cardinal ligament is resected compared with that in a total hysterectomy.Contrast-enhanced CT is useful for evaluation of lymph node metastasis.PET-CT is also used for whole-body scanning when distant metastasis is suspected.

Informed consent
Informed consent is an extremely important element in establishing a trust relationship with the patient and her family.At our outpatient clinic, patients are provided with a full explanation at the time of their initial visits to the hospital, at the end of the examinations, and at the time of admission.Definitive written consent carrying the signature of the patient is obtained at the time of admission of the patient after following our institutional procedures in respect of giving information about the surgery and obtaining consent in the presence of the patient's family and a nurse.This is that part of a research protocol.

Practical features of modified radical hysterectomy
The operator basically stands on the left side, and the assistant on the right side of the patient.Intrapelvic procedures are easier from the left side for a right-handed operator.At laparotomy, the operator should wear a cotton glove on the left hand to avoid slippage when gently displacing and pulling the intestinal tract or the peritoneum.It is important for successful peritoneal procedures to obtain an adequate operative field, and incision of the abdominal wall allowing a 1-2 cm margin is an important point to this end.At our institution, in order to minimize postoperative pain, this surgery is performed under general anesthesia combined with epidural anesthesia, and an electric knife is used for every cutting procedure except for the hypogastric median skin incision.After laparotomy, the presence/absence of intraperitoneal lesions is examined by palpation and visual inspection, and the intraperitoneal site subject to surgical manipulation is observed carefully with the use of a lateral blades laparotomy retractor.With a full understanding of the positional relationships among the uterus, adnexa, intestinal tract and bladder, the operator elevates the small intestine from the minor pelvic cavity to the epigastric region, and compresses the left, right and central parts with gauze towels to prevent slippage of the small intestine.Then, a upper blade is set at the center to allow a sufficient operative field, and the surgical procedures are begun on the right side, proceeding thereafter to the left side.A flow-chart is given to illustrate the patient selection of modified radical hysterectomy for endometrial carcinoma (Fig. 1).

Holding the uterus
The uterus, adnexa and adjacent organs are palpated to confirm their positional relationships, and the degree of fixation and mobility.The round ligaments of the uterus, oviducts and ligaments of the ovary are clamped bilaterally with two long and straight Kocher forceps.The clamps are fixed firmly with gauze, and pulled to allow initiation of the manipulations from the right side.

Clamping, cutting and ligation of the infundibulopelvic ligament
To prevent ureteral injury, the infundibulopelvic ligament is clamped with two long and straight Kocher forceps after confirming the course of the ureter, while a short Kocher   forceps is set for the infundibulopelvic ligament to be preserved in order to prevent slippage.The infundibulopelvic ligament is then cut and ligated with 1-0 silk suture to be held, and pulled (Fig. 2).At this point, ureteral injury can be avoided if the infundibulopelvic ligament is clamped with a long and straight Kocher forceps while elevating the infundibulopelvic ligament with forceps with some distance maintained from the ureter.Opening the broad ligament close to the round ligament of the uterus makes the subsequent processing of the round ligament easier.Because there is the possibility of hydrosalpinx and fallopian tube cancer, the mesosalpinx on the fallopian tube side should be coagulated, incised and resected with an electric knife.

Clamping, cutting and ligation of the round ligament of the uterus
The round ligament of the uterus is clamped, cut, ligated with 1-0 silk suture, and pulled, while setting two long and straight Kocher forceps at a position 2/3 lateral to the uterus (Fig. 3).The uterus is pulled upward, detached and incised with an electric knife from the anterior lobe of the broad ligament toward the peritoneum of the vesicouterine pouch.
Because webby thin and sparse connective tissue appears on the inner side of the peritoneum, manipulation of the electric knife as though using Cooper scissors is necessary for the detachment procedure.When incising the bladder peritoneum, approximating too close to the bladder would cause bleeding, therefore, caution is required.

Development of the pararectal and paravesical spaces (in cases of pelvic lymphadenectomy)
While the uterus is pulled left anteriorly, the assistant clamps and pulls the posterior lobe of the broad ligament with the straight Pean forceps to confirm the course of the ureter.The pararectal space in the pelvic floor is displaced in a left inguinal direction with a side plate under the course of the ureter attached to the posterior lobe of the broad ligament, and simultaneously, the non-resistive sparse connective tissue is displaced in 1-2 installments with Cooper scissors toward 180-degree opposite side.By this procedure, the pararectal space can be developed easily (Fig. 4).If there is resistance, the internal iliac artery may be compressed, and forced development may cause bleeding.Beginners should be particularly cautious about this point.Next, when the curved Pean forceps set for the bladder peritoneum are pulled, a funicular structure can be found in the connective tissue running toward the paravesical space.This structure is the paraumbilical ligament.When nonresistive sparse connective tissue is expanded with a side plate and Cooper scissors on the right and left side of the paraumbilical ligament, the paravesical space appears (Fig. 5).If a vascular tape is set for the paraumbilical ligament and fixed with a short Kocher forceps, subsequent manipulations become easier.Development of the pararectal and paravesical spaces should be done by a side plate and Cooper scissors.Displacing non-resistive sparse connective tissue in 1-2 installments would allow easy development.If there is resistance, the direction may be wrong, and should therefore be rechecked.The procedural steps for pelvic lymphadenectomy are skipped in this paper.

Detachment of the ureter and cutting of the posterior lobe of the broad ligament
After confirming the course of the ureter while pulling the posterior lobe of the broad ligament clamped with the straight Pean forceps, the ureter is isolated from the uterus by detaching it with Cooper scissors up to the vicinity of the right uterine artery.The knack for easier isolation of the ureter from the posterior lobe of the broad ligament involves detachment of the ureter with Cooper scissors first at an angle perpendicular to the course of the ureter and then along the course of the ureter (Fig. 6).Then, to separate the ureter from the uterus, the ureter is displaced laterally with a side plate, and the posterior lobe of the broad ligament is detached with an electric knife toward the vicinity of the sacrouterine ligament and the superficial layer, and then cut and developed.We commonly use a side plate because this surgical instrument is very useful for expansion of the operative field if the direction is properly determined on a side plate.

Cutting of the sacrouterine ligament and opening of the Douglas' pouch
While the assistant is pulling the uterus to make a 90-degree angle to the right sacrouterine ligament, the rectum and right pelvic peritoneum are tensed with the left hand, and the superficial layer of the right sacrouterine ligament is cut with an electric knife without ligation (Fig. 7).Then, while the assistant is pulling the uterus, the rectum is tensed with the left hand, and the Douglas' pouch is incised.After incising the thin funicular sparse  The Role of Modified Radical Hysterectomy in Endometrial Carcinoma 59 connective tissue with an electric knife, the pouch opens spontaneously (Fig. 8).While avoiding injury to the hypogastric nerve, the deep layer of the sacrouterine ligament is detached and cut.When gauze is placed between the rectum and the vaginal wall and displaced downward with the fingers, the rectum can be detached easily from the vaginal wall.At this time, for a better result, the superficial layer and the posterior layer of the thin and funicular sacrouterine ligament, firmly tensed with the hand wearing a cotton glove to avoid slippage of the rectum and right pelvic peritoneum, should be incised little by little.

Detachment of the bladder
After similar manipulations on the left side, the operation proceeds to the process of detachment of the bladder.The uterus is elevated upward, and the positional relationship between the uterine cervix and the bladder is confirmed by palpation.Then, a small incision is made in the tensed vesicouterine pouch with an electric knife while the bladder peritoneum is elevated with the long and straight Pean forceps.This procedure causes the appearance of the bladder wall, the lustrous muscular layer of the uterine cervix, and the webby sparse connective tissue (Fig. 9).Gauze is placed in these structures, and the bladder is displaced and detached sufficiently with the gauze while manipulating it as though rolling it over downward with a side plate and Cooper scissors (Fig. 10).The bladder is detached and isolated at the center, and thereafter the sparse connective tissues on the left and right sides are detached with the Cooper scissors while pushing laterally.This procedure allows easy detachment of the bladder with scarcely any bleeding.If the sparse connective tissue on the lateral side of the uterus is sufficiently cut with an electric knife up to the vicinity of the uterine artery when detaching the bladder, it will facilitate the subsequent procedure involving the anterior layer of the vesicouterine ligament.Bleeding occurring during detachment of the bladder disturbs localization of the vesicouterine pouch, often resulting in injury to the muscular layer of the uterine cervix or the muscular layer of the bladder.Detachment of the uterus from the bladder is extremely important and requires good manipulation of the non-resistive part with gauze, a side plate, and Cooper scissors.
The injured muscular layer of the bladder, if any, should be sutured with Surgisorb 3.0.

Clamping, cutting, and ligation of the uterine artery
When adipose tissue in the periphery of the paraumbilical ligament is removed, the vesical artery, and then the uterine artery, become visible.The uterine artery bifurcates into the ascending and descending branches after going beyond the ureter and entering the uterus.
To preserve the feeding vessels distributed over the ureter, the main trunk of the uterine artery before the bifurcation beyond the ureter should be cut (Fig. 11).Formation of a ureteral tunnel is smooth if the ureter is displaced laterally in parallel to the course of the ureter with Cooper scissors, making use of the small space made by elevation of the anterior layer of the vesicouterine ligament with tweezers.Then, while holding the laterally displaced ureter in the ureteral tunnel with Cooper scissors, the anterior layer of the vesicouterine ligament is clamped with Kelly forceps necessarily set perpendicular to the uterine axis (Fig. 13).Then, the anterior layer of the vesicouterine ligament on the uterine side is clamped with a short and straight Kocher forceps.At this time, it is necessary to exercise caution against clamping of the ureter.Then, the anterior layer of the vesicouterine ligament on the uterine side is clamped with a short and Kocher forceps and cut with an electric knife.A single procedure is usually adequate, but two divided procedures of cutting the anterior layer may be employed if the dissection of the anterior layer is difficult.

Detachment of the ureter in the posterior layer of the vesicouterine ligament
Although the ureter running in the posterior layer of the bladder is exposed, the lower portion of the ureter is adherent to the posterior layer of the vesicouterine ligament with sparse connective tissue.Therefore, the ureter in the posterior layer can be easily isolated from the uterine side if the ureter is displaced laterally with Cooper scissors from above with rolled gauze set in place (Fig. 14).No processing of the posterior layer of the vesicouterine ligament is necessary.

En bloc clamping, cutting and ligation of the posterior layer of the vesicouterine ligament, cardinal ligament and deep layer of the sacrouterine ligament
When the bladder is displaced downward with a bladder retractor, and the uterus is adequately pulled upward, the ureter can be confirmed in a far lower location.After the positional relation among the muscular layer of the uterine cervix, bladder, vaginal wall and the course of the ureter is confirmed by palpation, the posterior layer of the vesicouterine ligament, the cardinal ligament and the deep layer of the sacrouterine ligament are clamped en bloc with the versatile forceps, and a short and straight Kocher forceps is also used on the uterine side to prevent backflow of blood (Fig. 15).To prevent bleeding, the tissues are cut with an electric knife at a site slightly beyond the portion clamped with the versatile forceps to allow a safe margin, and sutured with a needle and #1 silk thread.At this time, the clamping area should be palpated before clamping to ensure that the muscular layer of the uterine cervix is not held with the versatile forceps.Because the ureter is detached sufficiently from the uterine side, a single clamping procedure is adequate to avoid injury to the ureter.

Clamping, cutting, and ligation of the paravaginal connective tissue
Then, the remaining paravaginal connective tissue is clamped with the versatile forceps and cut, while setting the short and straight Kocher forceps on the uterine side.By this procedure, the vaginal canal is completely isolated to allow sufficient resection of the vaginal wall.

Cutting of vaginal canal and removal of the uterus
After clamping the bilateral cut ends of the vaginal wall with the curved Kocher forceps to avoid slippage, a towel gauze is placed in the Douglas' pouch, and the bladder is displaced downward sufficiently with a bladder retractor.The uterus is then elevated, and the cutting site is confirmed by palpation to avoid cutting into the uterine cervix, and the vaginal wall is clamped with the large and curved Kocher forceps to prevent any escape of endometrial carcinoma tissue (Fig. 16).The vaginal wall in the vaginal convexity is cut with an electric knife, and the inside of the vagina is disinfected with an Isodine cotton swab.After gauze is inserted into the vagina to prevent leakage of intravaginal secretory fluid, the vaginal wall is clamped, held, and pulled with the long and straight Kocher forceps while incising the vaginal wall.

Vaginal wall suture
First, the bilateral vaginal wall cut ends are subjected to simple suture ligation with a blunt needle, 1-0 control release Vicryl, and cut, and the anterior and posterior portions of the vaginal wall are sutured by Z suture and pulled (Fig. 17).Because bleeding is likely to occur from the bilateral cut ends of the vaginal wall, particular caution is required.Taking into consideration prevention of shortening of the vaginal canal and the patient's QOL, including the postoperative sex life in individual cases, the cut ends of the vaginal wall are opened and sutured in a continuous fashion to keep the length of the vagina.When lymphadenectomy is performed, the retroperitoneum should not be sutured to allow for smooth drainage of lymph, and a closed-end drain should be inserted through the abdominal wall and retained in the pelvic floor.The Role of Modified Radical Hysterectomy in Endometrial Carcinoma 67

Confirmation of hemostasis and abdominal wall suture
After arrest of bleeding from the posterior aspect of the detached bladder, the cut end suture site on the vaginal wall, en bloc cut ends of the vesicouterine ligament, cardinal ligament, and deep layer of the sacrouterine ligament, the cut end of the sacrouterine ligament, inside the pelvic cavity, and the cut sites is confirmed, double ligation of the bilateral infundibulopelvic ligament and round ligament of the uterus is performed.In cases of bleeding from the connective tissue, Z sutures with 3-0 silk thread are employed, and the simple suture thread of the vaginal cut ends is cut off.The pelvic peritoneum is opened, and Seprafilm  is attached to the bilateral retroperitoneal spaces for preventing adhesion.After putting the rectum back in its original position, the laparotomy incision is closed.The gauze count, including towel gauze, is confirmed by the doctors and nurses before closure of the incision.For closure of the laparotomy incision, the peritoneum is sutured continuously with a 2-0 Surgisorb cutting needle, and the cut ends of the fascia are sutured at 2 or 3 sites by a simple ligation suture with #1 Surgilon.The fascia should be sutured continuously with a #1 Polysorb blunt needle, while simple ligation is carried out at 2 or 3 sites to prevent abdominal wall hernia.The skin is closed by simple ligation suture by the mattress suture technique with 1-0 nylon thread, with the skin edges between the ligations are approximated with a Steri-strip.Finally, the vaginal wall is retracted with a vaginal speculum to remove gauze, and absence of bleeding from the vaginal wall cut ends is confirmed.The operation is ended after the absence of any remaining gauze is confirmed on a plain radiograph taken just before the end of the surgical procedure.

Materials and methods
Between December 1987 and December 2002 we performed modified radical type II hysterectomy with bilateral salpingo-oophorectomy including systematic pelvic and paraaortic lymphadenectomy, and peritoneal cytology in 284 endometrial carcinoma patients according to the classification of the International Federation of Gynecology and Obstetrics (stage IA, n=66; stage IB, n=96; stage IC, n=33; stage IIA, n=5; stage IIB, n=20; stage IIIA, n=28; stage IIIC, n=28; and stage IV, n=8, Announcements FIGO stage, 1989) who gave informed consents at our institute.Systematic pelvic and para-aortic lymphadenectomy included complete dissection of lymph nodes from the femoral ring caudally to the lower margin of the renal vessels.No patients had intraabdominal residual lesions after surgery.Other inclusion criteria were as follows: Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 2, age 75 years or younger, normal bone marrow, renal, liver, and cardiac function.The mean age (range) was 56 (26-75) years, with the median follow-up being 70 (24-189) months, and there were 88 and 196 pre-and postmenopausal patients, respectively.Histological examination showed 257 endometrioid adenocarcinomas (grade 1, n=129; grade 2, n=101, grade 3, n=27), 16 adenosqamous carcinomas, 8 serous adenocarcinomas and 3 clear cell adenocarcinomas.The patients with a tumor confined to the uterus (stage IC and II) for intermediate group were treated by 3 courses of CEP (cyclophosphamide 750mg/m 2 , epirubicin 50mg/m 2 , and cisplatin 75mg/m 2 ) regimen 3-4 weeks apart and patients with intrapelvic lesions involving adnexa and/or pelvic lymph node (PLN) for high risk group were treated by 5 courses.In addition, 10 courses were given in the patients with extrapelvic lesions involving para-aortic lymph node (PAN) for h i g h r i s k g r o u p .W e h a v e n o i n d i c a t i o n f o r a d j u v a n t r a d i o t h e r a p y i n p a t i e n t s w i t h endometrial carcinoma in this protocol.These anti-cancer agents were administered intravenously on Day 1. Univariate analysis for recurrence risk factors was performed by the X² test.Recurrence risk factors for endometrial carcinoma ware analyzed for multivariate logistic regression using StatView (SAS Institute Inc.) Version 5.0.P-values of less than 0.05 were considered to be statistically significant.

Results and discussion
The overall incidence of retroperitoneal lymph node (RLN) metastasis assessed by systematic pelvic and para-aortic lymphadenectomy was 12.0% (34/284) in Stage I-IV endometrial carcinoma, and incidences of PLN and PAN metastasis were 9.2% (26/284) and 7.4 % (21/284), respectively.However, PAN metastasis rate is 50% (13/26) in patients with PLN metastasis.Thirteen patients (4.6%) had lymph node metastasis in the pelvic region alone, 8 (2.8%) in the para-aortic region alone and 13 (4.6%) in both regions.This low incidence of isolated PAN metastasis was possibly considered due to many early stage I diseases, and para-aortic lymphadenectomy should be performed in high risk patients with intrapelvic extention, for example, PLN metastasis or ovarian metastasis.We are now performing systematic pelvic lymphadenectomy and resect in clinically suspicious PAN metastasis for high risk patients.The incidence of RLN metastasis by histological examination was 6.2% (8/129) in grade 1, 12.0% (12/101) in grade 2, 18.5% (5/27) in grade 3, 25.0% (4/16) in adenosquamous carcinoma, 50.0%(4/8) in serous adenocarcinoma and 33.3% (1/3) in clear cell adenocarcinoma.The incidence of lymph node metastasis was lower in endometrioid adenocarcinoma grade 1 than in endometrioid adenocarcinoma grade 2/3, and there was also a high incidence of lymph node metastasis in the histological subtypes, so-called adenosquamous carcinoma, serous carcinoma, and clear cell adenocarcinoma.The average number (range) of dissected nodes was 24.7 (10-62) for PLN and 10.1 (5-47) for PAN.We had more of operating time as well as blood loss for this operation, but this is clinically within permissible limits because there was no need to give a blood transfusion to the patients .Operating time and blood loss (mean average ± standard deviation: SD), in modified radical hysterectomy including systematic pelvic and para-aortic lymphadenectomy, were 222±61.6min and 545±301 ml, respectively.There was no severe lymphedema associated with systematic lymphadenectomy.
One of the main postoperative adjuvant treatments is radiation and vaginal brachytherapy, however, there are few papers dealing with long-term survival in patients with systematic retroperitoneal lymphadenectomy followed by postoperative adjuvant chemotherapy.PAC (cisplatin, doxorubicin and cyclophosphamide) is one of the most commonly used regimens in endometrial carcinoma, and the less cardiotoxic analog epirubicin seemed to have the same activity as doxorubicin.Gadducci et al., (1999) described that the combination of cisplatin, epirubicin, and cyclophosphamide had good activity in advanced or recurrent endometrial carcinoma.Therefore, we examined recurrence risk factors over the past 10 years in patients with surgically staged endometrial carcinoma followed by postoperative CEP regimen.Postoperative adjuvant CEP chemotherapy was performed in 58 patients with a tumor confined to the uterus (Stages IC and II) in 3 courses 3-4 weeks apart and in 43 patients with extrauterine lesions involving adnexa and/or PLN in 5 courses, and also in 21 patients with PAN metastasis in 10 courses.No patient required major modification of the treatment modality of the postoperative adjuvant chemotherapy because of acute myelosuppression or gastrointestinal disorder (Hiura et al., 2010).Gynecologic Oncology Group (GOG) randomized trial (Randall et al., 2006) showed that AP (doxorubicin and cisplatin) chemotherapy significantly improved progression-free and overall survival compared with WAI (whole-abdominal irradiation) in patients with Stages III or IV endometrial carcinoma with a maximum of 2cm of postoperative residual disease.Paclitaxel (Lissoni et al., 1996) is active in patients with endometrial cancer pretreated with PAC, and also carboplatin (Burke et al., 1993)

Conclusion
In modified radical hysterectomy, the uterus should be extirpated with the cardinal ligament allowing an extra 1.5-2.0cm margin of the vaginal wall.The key point of the technique is formation of a ureteral tunnel during the dissection of the anterior layer of the vesicouterine ligament, while lightly pulling the ureter with tweezers, Cooper scissors and ureteral retractors.Modified radical hysterectomy has a broad range of applications, being positioned in between total hysterectomy and radical hysterectomy.This surgical technique has the advantage that postoperative urinary disturbances and other complications are minimized if the surgical candidates are selected appropriately.This surgical procedure could contribute to reduce locoregional recurrence, especially vaginal stump in stage I/II.It is suggested that management of endometrial carcinoma with risk factors by appropriate surgery and adjuvant chemotherapy is very important for preventing both locoregional and distant recurrence.Thus, further application of this technique is expected.

Acknowledgments
This study was supported by a grant from the Japanese Organization of the Ministry of Health, Labor and Welfare (2010).

Fig. 1 .
Fig. 1.Flow-chart of the patient selection for modified radical hysterectomy in endometrial carcinoma.

Fig. 3 .
Fig. 3. Clamping, cutting and ligation of the round ligament of the uterus.

Fig. 14 .
Fig. 14.Detachment of the ureter in the posterior layer of the vesicouterine ligament.

Fig. 15 .
Fig. 15.En bloc clamping, cutting and ligation of the posterior layer of the vesicouterine ligament, cardinal ligament and deep layer of the sacrouterine ligament.

Fig. 16 .
Fig. 16.Cutting of the vaginal canal and removal of the uterus.
has definite activity in endometrial carcinoma and offers a well-tolerated palliative therapeutic alternative.Phase III randomized study of doxorubicin, cisplatin, paclitaxel, and filgrastin (G-CSF) versus carboplatin and paclitaxel in patients with stage III or IV or recurrent endometrial cancer (GOG 209) is now analyzing (National Cancer Institute, 2011).
CR: Complete response, PR: Partial response, SD: Stable disease, PD: Progressive disease

Table 3 .
Incidences of recurrence by histological examination www.intechopen.comThe Role of Modified Radical Hysterectomy in Endometrial Carcinoma RLN: Retroperitoneal lymph node

Table 4 .
Recurrence risk factors by univariate analysis in endometrial carcinoma CI: Confidence interval, RLN: Retroperitoneal lymph node.

Table 5 .
Recurrence risk factors by multivariate analysis in endometrial carcinoma