title: The tooth-root sign: a characteristic appearance of distal ureteric calculi.
abstract: Diagnostic accuracy in identifying calculi in patients with ureteric colic is poor. Lower ureteric calculi may be confused with other pelvic calcific opacities. A characteristic appearance of some larger lower ureteric calculi is described and likened to the root of a tooth. It is hoped that the tooth-root sign will be of assistance in the diagnosis of distal ureteric stones.
authors: Department of Radiology, Hadassah University Hospital, Jerusalem, Israel.
authors: R A
authors: RA
authors: Bloom
authors: E
authors: E
authors: Libson
authors: A
authors: A
authors: Verstandig
authors: M
authors: M
authors: Rackow
mesh_terms: D006801:Humans; D011859:Radiography; D014513:Ureter / Q000000981:diagnostic imaging*; D014514:Ureteral Calculi / Q000000981:diagnostic imaging*