[Intravesical ectopic recurrence of bladder tumors]

Area of Science:

• Urology
• Oncology

Background:

• Conservative therapy is standard for bladder tumors, aiming to preserve bladder function.
• Intravesical ectopic recurrence is a significant postoperative challenge after conservative treatment.

Purpose of the Study:

• To evaluate recurrence rates after conservative bladder tumor treatment.
• To assess the effectiveness of various postoperative prophylactic adjuvant therapies in preventing recurrence.

Main Methods:

• Retrospective analysis of 144 patients treated conservatively between April 1969 and March 1986.
• Comparison of recurrence rates based on tumor grade, stage, size, and adjuvant therapy type.

Main Results:

• Initial recurrence rate was 36.8%, with second recurrence at 73.2%.
• Higher recurrence rates observed for higher histological grades (Grade 3: 50.0%) and larger tumors (>3 cm).
• Intravesical Mitomycin C (MMC) and Adriamycin (ADM) showed lower recurrence rates (28.6% and 30.0%) compared to no adjuvant therapy (37.0%). Fluorouracil (5FU) demonstrated limited efficacy.

Conclusions:

• Conservative treatment for bladder tumors is associated with a high recurrence rate.
• Adjuvant intravesical therapies, particularly MMC and ADM, may help reduce recurrence.
• Tumor grade, stage, and size are critical factors influencing recurrence risk.