An acquired urethral diverticulum is an uncommon lesion that may not be suspected initially.
The diverticulum is a saccular dilatation with its opening onto the urethra. An acquired diverticulum lacks smooth muscle in its wall.
An acquired diverticulum may occur as a result of:
(1) urethral trauma
(2) urethral surgery, especially for hypospadias
(3) infection/urethritis
(4) urethral stenosis
(5) prolonged urethral catherization
Clinical findings may include:
(1) recurrent urinary tract infection
(2) dribbling of urine
(3) urinary incontinence
(4) weak urine stream
(5) palpable mass
(6) urethral stone formation
The diagnosis may be made:
(1) on imaging studies
(2) during urethroscopy
Differential diagnosis:
(1) benign prostatic hypertrophy
