Gastropleural fistula due to gastric perforation after cytoreductive surgery and hyperthermic intraperitoneal chemotherapy for ovarian cancer

Gastropleural fistula is an uncommon complication post-abdominal surgeries. We are reporting a case of a 60-year-old female who developed a gastropleural fistula with pleural effusion as a complication of cytorductive surgery (crs) and hyperthermic intraperitoneal chemotherapy (HIPEc) for ovarian cancer. the diagnosis was discovered by radiological study (ct scan of chest, abdomen and pelvis). the patient underwent laparotomy with surgical repair of the fistula, which was the definite treatment for this case.


INtrODUctION
Gastropleural fistula has been reported as a complication of intrathoracic gastric perforation in hiatal hernia, traumatic diaphragmatic hernia with later gastric perforation, perforated malignant gastric ulcer at fundus, extension of subphrenic abscess with gastric perforation, pulmonary resection and gastric bypass operations [1][2][3][4][5]. The diagnosis of gastric-pleural fistula is usually made by radiographic contrast examination [11], upper endoscopy, or at surgery [10]. We are reporting a case of gastric perforation into the thoracic cavity following, discussing the possible etiology, diagnosis and management of such cases.

cAsE rEPOrt
A 60-year-old female was a known case of hypertension on oral medication. Previous surgical history includes laparoscopic cholecystectomy and diagnostic laparoscopy. The patient's problem started since two years with abdominal distention and progressive weight loss. She was diagnosed to have bilateral ovarian enlargement with a picture of peritoneal carcinomatosis. She underwent diagnostic laparoscopy and a biopsy was taken which revealed papillary serous ovarian cancer. The patient received three cycles of neoadjuvant chemotherapy and showed good response, after which she underwent interval debulking in December 2012. After two years of follow-up, she developed recurrence of her disease. She underwent CRS including total peritonectomy, splenectomy, distal pancreatectomy, appendectomy plus HIPEC. Postoperatively, the case report peer reviewed | opeN access J Case Rep Images Surg 2016;2:43-45. www.edoriumjournals.com/case-reports/jcrs/index.php patient was stabilized in the ICU for a few days and then transferred to the surgical ward. The patient was progressing well, she was gradually advanced to full diet, her abdominal drains were removed, mobilizing as tolerated, and prepared to go home. On day-10 postoperatively, the patient started complaining of abdominal pain, her heart rate was increasing up to 130 bpm, as well as her respiratory rate 25/min, and she had fever reached 38.5°C. The patient was transferred to the ICU then, intubated and sedated; work-up done to diagnosis sepsis. The patient was started on empirical IV antibiotics. Chest X-ray was done and revealed pleural effusion for which a pig tail catheter was inserted. The drainage fluid was pus and sent for culture and sensitivity (Figure 1). The patient condition did not improve in spite of the drainage of empyema. Computed tomography scan of chest, abdomen and pelvis showed gastropleural fistula (Figure 2). The patient was taken immediately for an exploratory laparotomy. The stomach was dissected from the diaphragm and it came out very easily. Then by close inspection, a tiny hole on the greater curvature was found and closed. Also the hole in the diaphragm was identified and closed. Postoperatively, the patient was transferred back to the ICU for stabilization, and then transferred to the surgical ward. She was stable, no fever, tolerating oral feeding. Computed tomography scan of abdomen and chest was normal. The drains were removed and the patient was discharged home in a good condition.

DIscUssION
Gastropleural fistula has been described in 1960 by Markowitz and Herter. They described causes of gastropleural fistula as intrathoracic perforation of stomach in hiatal hernia, traumatic diaphragmatic hernia with perforation of stomach and intraperitoneal gastric perforation with erosion of subphrenic abscess via diaphragm [1,2]. Later, it was also recognized that these fistulas might occur in late postoperative phase of esophagogastrectomy, with or without presence of recurrent tumor or radiation therapy [5][6][7][8].
Gastropleural fistula is a rare post-abdominal surgery complication, and to our mind, this is the first case to be reported as a complication of CRS and HIPEC. The diagnosis of gastropleural fistula is usually made by radiographic contrast examination [9], upper endoscopy, or at surgery [10].
The definitive cause of the gastropleural fistula in this case remains unknown. We can assume that the fistula complicated the peeling of peritoneum from the diaphragm with the presence of minor tear in the stomach resulted from dissection of the greater omentum which lead to sub-diaphragmatic abscess formation. This abscess was subsequently opened and drained into pleural cavity.

cONcLUsION
In conclusion, we reported that case to focus on the difficulties in diagnosis of such complications, which often requires endoscopic and radiological procedures. The diagnosis delayed because we did not suspect that chest empyema was developed as a complication of abdominal surgery. So, the physicians should suspect and put the chest complications on the differential diagnosis in patients who develop dyspnea due to pleural effusion after major abdominal procedures. *********

Author contributions
Ali Mohammad Alakhtar -Substantial contributions to conception and design, Acquisition of data, Analysis and interpretation of data, Drafting the article, Revising it critically for important intellectual content, Final