American Journal of Roentgenology, Vol 170, 1269-1274, Copyright © 1998 by American Roentgen Ray Society

ARTICLES

Sonography of the female urethra

CL Siegel, WD Middleton, SA Teefey, MA Wainstein, EM McDougall and CG Klutke
Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO 63110, USA.

OBJECTIVE: The purpose of this study was to explore the role of sonography for women with urethral symptoms and a suspected urethral diverticulum. SUBJECTS AND METHODS: Nineteen women with urethral symptoms underwent voiding cystourethrography (VCUG) and transvaginal, transperineal, and urethral sonography (using a catheter-based transducer). VCUGs and sonograms were evaluated for diverticula, defined on sonography by direct visualization of the neck connecting the periurethral sac with the urethral lumen. The diverticular neck, size, location, and shape were noted. Lesions revealed by sonography as not connected to the urethra were also noted. RESULTS: Of 19 women, 14 had urethral diverticula and one had two diverticula, for a total of 15 diverticula. On sonography the diverticula ranged in diameter from 2 mm to 5 cm. Both sonography and VCUG showed 13 of the 15 diverticula. In addition, sonography revealed two infected periurethral cysts, a periurethral leiomyoma, a diffuse urethritis, and scarring or deformity of one patient's urethra from a prior diverticulectomy. On sonography, eight of the 13 diverticula wrapped around more than 50% of the urethral circumference. The neck was precisely seen (by definition) in 13 of 15 diverticula on sonography and in two of 13 diverticula on VCUG. CONCLUSION: Sonography is useful in this group of women with urethral symptoms and suspected urethral diverticula. It provides information on the extent and location of the diverticular neck, both of which are important in surgical excision. Also, sonography provides information on lesions not connected to the urethra. Sonography may prove useful in a broader group of women with urethral symptomatology.
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