Current Approaches to the Management of Non-Muscle Invasive Bladder Cancer: Comparison of Current Guidelines and Recommendations

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Abstract

Context

The guidelines of the European Association of Urology (EAU), the First International Consultation on Bladder Tumors (FICBT), the National Comprehensive Cancer Network (NCCN), and the American Urological Association (AUA) all provide an excellent evidence-based background for the management of non-muscle invasive bladder cancer (NMIBC). Although there are areas of consensus among the four guidelines, their recommendations vary with respect to important issues surrounding NMIBC.

Objective

To provide community urologists with practical and unified guidance on the management of NMIBC through a comprehensive review of current influencing guidelines.

Evidence acquisition

A committee of internationally renowned leaders in bladder cancer management, known as the International Bladder Cancer Group (IBCG), was convened in October 2006 to review current literature surrounding the management of NMIBC as well as the current clinical practice guidelines of the EAU, the FICBT, the NCCN and the AUA. Following the inaugural meeting in October 2006, the IBCG met on three subsequent occasions (March 2007, September 2007, and March 2008) to critically analyze and compare the EAU, FICBT, NCCN, and AUA guidelines.

Evidence synthesis

The IBCG critically analyzed and summarized the EAU, FICBT, NCCN, and AUA guidelines and identified the key similarities and differences in their recommendations.

Conclusions

Established areas of consensus among the four guidelines include the importance of transurethral resection of the bladder tumour (TURBT) and an immediate, postoperative dose of chemotherapy (agent optional) in all patients with NMIBC, as well as the benefit of adjuvant bacillus Calmette-Guérin (BCG) therapy in high-risk disease. However, the four guideline recommendations vary with regard to the following important issues: (1) the definitions of low-, intermediate-, and high-risk disease, and (2) the appropriate management and follow-up of patients in each of these risk categories. Furthermore, there is currently no consensus on the definition and appropriate management strategies for primary intravesical treatment failures among the four guidelines.

Introduction

The guidelines of the European Association of Urology (EAU) [1], the First International Consultation on Bladder Tumors (FICBT) [2], the National Comprehensive Cancer Network (NCCN) [3], and the American Urological Association (AUA) [4], [5] all contribute to an excellent evidence-based framework for the management of non-muscle invasive bladder cancer (NMIBC). However, there are differences in the recommendations made in these guidelines as well as contentious areas and topics that are not addressed.

To provide more practical and uniform recommendations that would be applicable to community urologists, the International Bladder Cancer Group (IBCG) for NMIBC critically analyzed and compared the EAU, FICBT, NCCN, and AUA guidelines. This article summarizes these guidelines and identifies the key similarities and differences in their recommendations.

Before comparing the guidelines, it is important to note the categories of consensus or evidence-based grading systems used by each of the individual guideline panels. The level of evidence and grade of recommendations used in the EAU guidelines are shown in Table 1[6], [7]. The recommendations of the FICBT are based on the International Consultation on Urologic Disease (ICUD) grading system presented in Table 2[2], [8], and the NCCN recommendations are based on the categories of consensus shown in Table 3. All NCCN recommendations are category 2A unless otherwise specified [3]. The AUA Guidelines Panel conducted its own meta-analyses of randomised controlled trials and developed tables that provided outcome estimates for different treatment modalities for NMIBC. Based on evidence in the outcome tables and expert opinion, the AUA guideline statements were graded with respect to the degree of flexibility in their application [4], [5]. These three levels of flexibility are defined in Table 4.

The treatment and management of NMIBC ultimately depends on the patient's risk of recurrence and/or progression. The following article compares the EAU, FICBT, NCCN, and AUA risk-stratification definitions and treatment recommendations for each level of risk.

Section snippets

Definitions of levels of risk

Although the EAU, FICBT, NCCN, and AUA guidelines agree on the importance of risk stratification for NMIBC management, there are differences in their definitions of level of risk as well as their proposed treatments for each risk category. Table 5 summarizes the definitions for low-, intermediate-, and high-risk disease proposed by the EAU, FICBT, NCCN, and AUA [1], [3], [4], [5], [9], [10], [11].

Transurethral resection of the bladder tumour

All guideline recommendations agree that transurethral resection of the bladder tumour (TURBT) is the gold standard for the initial diagnosis and treatment of NMIBC, regardless of level of risk.

According to the FICBT recommendations, complete tumour resection should be attempted, except in cases of diffuse carcinoma in situ (CIS), and bladder perforation should be avoided [12]. The AUA acknowledges that the size and/or multiplicity of tumours or obvious deep muscle invasion may prevent complete

Defining treatment failure

The ability to determine the optimal management strategies for treatment failures has been hampered by the lack of a standard definition for failure. In fact, the EAU, FICBT, NCCN, and AUA all have varying definitions of treatment failure. The EAU, for example, does not define primary intravesical treatment failure but does provide the following definition for BCG failure [1]:

  • a.

    Whenever muscle-invasive tumour is detected during follow-up

  • b.

    If high-grade non-muscle invasive tumour is present at both

Follow-up regimens

Many urologists perform life-long, frequent follow-up cystoscopies in patients with NMIBC. However, such frequent follow-up is unnecessary, since approximately 50% of these patients have a very low risk of recurrence and a negligible risk of progression [27].

The recommended follow-up schedules proposed by the EAU, FICBT, NCCN, and AUA vary. In low-risk patients, for example, the EAU recommends surveillance cystoscopy at 3 mo. If negative, the following cystoscopy is advised at 9 mo and,

Conclusions

Through critical analysis and comparison of the EAU, FICBT, NCCN, and AUA guidelines, the IBCG has established areas of consensus on NMIBC management as well as on contentious topics that need to be addressed. Established areas of consensus among the four guidelines include the importance of TURBT and an immediate, postoperative dose of chemotherapy (agent optional) in all patients with NMIBC and the benefit of adjuvant BCG therapy in high-risk disease.

However, the four guideline

References (29)

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