Mucosal folds in the upper urinary tract.
D000328:Adult; D002648:Child; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007674:Kidney Diseases / Q000000981:diagnostic imaging; D007682:Kidney Pelvis / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D014513:Ureter / Q000000981:diagnostic imaging*; D014515:Ureteral Diseases / Q000000981:diagnostic imaging; D014567:Urography; D014570:Urologic Diseases / Q000000981:diagnostic imaging*