Diagnosis and Treatment of a Rare Bladder Urothelial Papilloma in a 9-Year-Old Boy: A Case Report

Bladder tumors are relatively rare in pediatric populations. Given the limited understanding and documentation of such cases, we present this report to describe the diagnosis and management of a rare case of bladder urothelial papilloma (UP) in a 9-year-old male patient. The patient was admitted for evaluation of hematuria discovered by his family. A comprehensive history revealed no known risk factors except for a habit of chewing on a water-based pen nib, which may represent a potential exposure route to chemical dyes. Detailed diagnostic workup confirmed the presence of a bladder mass, leading to transurethral laser resection (TURL) as the treatment modality. Histopathological examination identified UP, and follow-up at 3 and 6 months postoperatively showed no recurrence. This case highlights critical factors in diagnosing and managing pediatric bladder tumors, with special attention to how children's daily habits may impact the condition.