title: Distal ureteral calculi: diagnosis by transrectal sonography.
abstract: Eight patients were studied by both transrectal sonography and excretory urography for the presence of distal ureteral calculi. The sonographic diagnosis was correct in 5 of 5 true positives and 3 of 3 true negatives. Urography was correct in 4 of 5 true positives and 2 of 3 true negatives. None of the sonograms and two of the urograms were considered equivocal. Transrectal sonography appears to be a useful adjunct for the diagnosis of distal ureteral calculi when excretory urography is equivocal or contraindicated.
mesh_terms: D000328:Adult; D000368:Aged; D003558:Cystoscopy; D003951:Diagnostic Errors; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D012007:Rectum; D014463:Ultrasonography / Q000379:methods*; D014514:Ureteral Calculi / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014567:Urography