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

Abstract 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.