Objective: Urothelial carcinomas (UC) of the bladder in the pediatric population are rare and differ from adult papillary neoplasms in terms of clinical, pathological outcomes, and prognoses. Therefore, standardized recommendations have not been clearly defined for their management. In this study, we aimed to report our experience and long-term follow-up data with low-grade urothelial bladder neoplasms in pediatric patients.

Materials and Methods: The data of patients treated for bladder tumors in two tertiary centers between December 2018 and December 2024 were analyzed retrospectively. Patients who were younger than 18 years of age at the time of diagnosis and whose pathology was reported as UC were included in the study. Transurethral resection of the bladder tumors was carried out on all patients. Age, gender, presentation symptoms, tobacco use or exposure, imaging method, number of tumors, tumor size, histological findings, hospitalization time, complications, tumor recurrence, and follow-up data were examined.

Results: Four female and three male patients were included in the study. The mean age of the patients was 14.8 ± 2.1 (12–17) years. The most common symptom was hematuria. Mean tumor size was 20.5 ± 9.8 (14–40) mm, and all were low-grade. No recurrence was detected at a mean of 58 ± 13.8 (44–76) months after resection.

Conclusion: Urothelial carcinoma of the bladder is rare in the pediatric population. These neoplasms are usually low grade, and recurrence is rare. The most common recurrences are seen in the first year. Strict follow-up is essential in this period. Less invasive tools can be used for follow-up after the first year on low-grade neoplasms.

Keywords : adolescent, bladder tumor, pediatric, transurethral resection, urothelial carcinoma