[A case of posterior urethral polyp in a child].

A case of posterior urethral polyp in a child is reported. A 14-year-old boy presented to our hospital with the chief complaint of a sense of residual urine. Ultrasound sonography and cystoscopy showed a posterior urethral tumor (1.5 cm x 1.8 cm). Transurethral resection was performed, and the pathological diagnosis was a fibrous polyp. One year after transurethral resection, the patient showed no signs of recurrence. Only 8 cases of posterior urethral polyp in children have been previously reported in the Japanese literature.