[Calyceal crescent sign in obstructive hydronephrosis (author's transl)].
D000328:Adult; D006801:Humans; D006869:Hydronephrosis / Q000000981:diagnostic imaging*; D007670:Kidney Calices / Q000000981:diagnostic imaging*; D007682:Kidney Pelvis / Q000000981:diagnostic imaging*; D008297:Male; D011859:Radiography