Ultrasound-guided needle aspiration in prostatic abscess.

Objectives: To review the clinical presentation of prostatic abscess and to assess the usefulness of ultrasound-guided needle aspiration as a treatment option for this condition.

Methods: Between October 1984 and November 1997, prostatic abscess was diagnosed in 31 patients. The average age was 60 years (range 29 to 79). Prostate ultrasound was performed using either a hypogastric or transrectal approach. Initial therapy included ultrasound-guided needle aspiration in 24 (77.4%), transurethral resection of prostate (TURP) in 5 (16.1%), or conservative management with antibiotic therapy. During follow-up, ultrasound examinations and urine cultures were performed on an outpatient basis.

Results: Past medical history most often included previous urinary infection (15 patients, 48%) and bladder outlet obstruction (13 patients, 42%). Sixty-one percent of patients presented with irritative voiding symptoms at the time of diagnosis. Ultrasound-guided needle aspiration resolved 83.3% of cases; 2 patients needed a second procedure. Three patients required TURP for drainage and 2 to remove an obstruction after abscess resolution.

Conclusions: A high degree of suspicion is needed to diagnose prostatic abscess clinically. Transrectal ultrasound is necessary for the differential diagnosis. Transrectal ultrasound-guided needle aspiration is a technically simple and effective therapeutic procedure with no morbidity and, in case of failure, may be repeated or a drainage TURP may be undertaken.