Mahmood S, Majid A, Akbar AA.
Accuracy of sonourethrography in evaluation of anterior urethral strictures.
Biomedica Jan ;32(3):174-6.

Background and Objective: The management of urethral strictures is a challenge to both the urologists and patients. Thoughtful and satisfactory preoperative evaluation remains important to achieve good outcome. Sonourethrography can diagnose anterior urethral strictures, measure its length and detect presence of complications like spongiofibrosis and false tracts. The objective of the study is to evaluate the sensitivity and specificity of sonourethrography in the confirmation of diagnosis and measurement of length of anterior urethral strictures. Methods: This comparative cross sectional study was carried out in the department of Radiology Ch. Rehmat Ali Memorial Trust Hospital, Lahore from 15th January 2015 to 14th January 2016. A total of 45 male patients of all age group having anterior urethral stricture on retrograde urethrography were subjected to sonourethrography of anterior urethra. The length of stricture as assessed and measured on retrograde urethrography were also measured during sonourethrography and then compared with intra operative findings during surgery. Intra operative findings were considered as gold standard. Results: Retrograde urethrography showed 100% sensitivity, 97.78% positive predictive value and 97.78% diagnostic accuracy. Sonourethrography showed 100% sensitivity, 100% positive predictive value and 100% diagnostic accuracy. Conclusion: Sonourethrography (SUG) is more accurate in detection of anterior urethral strictures than the retrograde urethrography (RUG). Further characterisation of stricture in terms of length is also more accurately measured by SUG compared with conventional RUG and there is no radiation hazard.

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