de Filippi G, Derchi L E, Coppi M, Biggi E
Pediatr Radiol. 1983;13(6):351-2. doi: 10.1007/BF01625967.
Congenital urethral polyps are an uncommon cause of urethral obstruction in male children. The diagnosis is obtained at voiding cystography by demonstrating a filling defect which (typically) moves during micturition. A small polypoid mass with a stalk arising from the region of the verumontanum was observed by sonography in one such patient. We believe sonographic findings may be considered specific of this condition.
先天性尿道息肉是男性儿童尿道梗阻的罕见原因。排尿性膀胱尿道造影显示充盈缺损（通常）在排尿时移动，借此可做出诊断。在一名此类患者中，超声检查发现一个小的息肉样肿物，有蒂，起源于精阜区域。我们认为超声检查结果可被视为这种情况的特异性表现。
