Prognostic factors in bladder and bladder-prostate rhabdomyosarcoma

Area of Science:

• Pediatric Oncology
• Surgical Oncology
• Urologic Oncology

Background:

• Rhabdomyosarcoma of the urinary bladder is a rare pediatric malignancy.
• Identifying prognostic factors, particularly surgical, is essential for optimizing treatment strategies.
• Previous studies have not fully elucidated the role of surgical resection in fatal outcomes.

Purpose of the Study:

• To investigate surgical factors predicting fatal outcomes in patients with bladder rhabdomyosarcoma.
• To analyze the impact of complete surgical resection on survival rates.
• To evaluate the effectiveness of different surgical approaches and timing in conjunction with multimodal therapy.

Main Methods:

• Retrospective analysis of 25 patients diagnosed with bladder rhabdomyosarcoma between 1970 and 1985.
• Data included patient demographics, clinical staging (TNM criteria), surgical procedures, radiation, and chemotherapy protocols.
• Univariate and multivariate analyses were performed to identify predictive factors for survival.

Main Results:

• Complete surgical resection with negative microscopic margins was achieved in 16 patients via total or partial cystectomy.
• Eleven patients (44%) achieved disease-free survival, with 10 followed for over 6 years.
• Surgical resection timing (pre- vs. post-chemotherapy/radiation) and salvage cystectomies were analyzed in relation to outcomes.

Conclusions:

• Complete surgical resection is a significant predictor of survival in bladder rhabdomyosarcoma.
• Achieving negative microscopic margins is critical for improving long-term outcomes.
• Multimodal therapy, including surgery, chemotherapy, and radiation, is vital for managing this rare pediatric cancer.