Imaging of female urethral diverticulum: an update.
Female urethral diverticulum is an uncommon pathologic entity and can manifest with a variety of symptoms involving the lower urinary tract. Selection of the appropriate imaging modality is critical in establishing the diagnosis. Urethrography has traditionally been used in the evaluation of urethral diverticulum but provides only intraluminal information. Ultrasonography is advantageous in that it does not involve ionizing radiation and has the capacity to help detect a diverticulum without contrast agent filling. Multidetector computed tomographic (CT) voiding urethrography yields urethral images during micturition. In addition, the diverticulum and diverticular orifice can be visualized on two- and three-dimensional reformatted CT images. Interactive virtual urethroscopy provides simulated visualization of the intraluminal anatomy and the diverticular orifice. New magnetic resonance imaging techniques that make use of a surface or endoluminal coil have higher diagnostic accuracy and can delineate the diverticular cavity and help detect related complications. Clinicians should consider the possibility of a urethral diverticulum in women with chronic or recurrent lower urinary tract symptoms. Moreover, because female urethral diverticulum is becoming more prevalent in clinical practice, radiologists should be familiar with its imaging features and with the imaging techniques that are optimal for its evaluation.
Chou
Chen-Pin
CP
Department of Radiology and Institute of Clinical Medicine, Kaohsiung Veterans General Hospital and National Yang-Ming University, Taipei, Taiwan, Republic of China. r2207759@ms19.hinet.net
Levenson
Robin B
RB
Elsayes
Khaled M
KM
Lin
Yih-Huie
YH
Fu
Ting-Ying
TY
Chiu
You-Shin
YS
Huang
Jer-Shyung
JS
Pan
Huay-Ben
HB
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000639:trends*; D008875:Middle Aged; D014057:Tomography, X-Ray Computed / Q000639:trends*; D014463:Ultrasonography; D014521:Urethra / Q000002:abnormalities / Q000000981:diagnostic imaging / Q000473:pathology