There have been 14 cases of anterior urethral valves reported in the literature. The main diagnostic test in these cases has been voiding cystourethrography since retrograde urethrography is believed to be useless. Two additional cases of anterior urethral valves are presented to demonstrate the usefulness of the retrograde urethrogram as a valuable adjunctive diagnostic study.
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Hartig et al. (1977) studied this question.
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