Partial cystectomy during radical surgery for nonurological malignancy.

Area of Science:

• Urology
• Surgical Oncology
• Oncology

Background:

• Locally advanced nonurological malignancies frequently invade the bladder.
• Partial cystectomy is sometimes necessary for complete tumor eradication.
• The benefits of partial cystectomy in these cases are not well-established.

Purpose of the Study:

• To evaluate the outcomes of partial cystectomy in patients with nonurological malignancies invading the bladder.
• To identify common bladder-invading malignancies.
• To assess complication rates and prognosis following wide en bloc resection.

Main Methods:

• Retrospective review of 45 patients undergoing partial cystectomy for nonurological malignancy.
• Analysis of malignancy types, invasion incidence, complication rates, and prognosis.
• Correlation of surgical margins and intent (curative vs. palliative) with outcomes.

Main Results:

• Colorectal adenocarcinoma was the most common cause of bladder invasion.
• Malignant invasion was present in 21.5% of bladder specimens.
• Patients undergoing surgery with curative intent and negative margins had a 69.6% disease-free rate at mean follow-up.
• Disease progression or cancer-related death was high in palliative cases (93.3%) and those with positive margins (94.1%).
• Disease-specific survival was 27.3% with malignant invasion versus 41.2% with fibrous fixation only.
• No complications were attributed to partial cystectomy.

Conclusions:

• Partial cystectomy is essential for managing advanced nonurological malignancies involving the bladder, whether by direct extension or fibrous reaction.
• Achieving negative surgical margins during radical surgery with curative intent is critical for prolonged disease-free survival.
• Wide en bloc resection ensures complete tumor excision, improving patient prognosis.