title: The fragmented staghorn calculus: a radiological sign of pyonephrosis.
abstract: Staghorn calculi may cause several complications, particularly important being the development of pyonephrosis due to long-standing infection. We describe four patients who presented with either a marked systemic illness or a loin mass due to pyonephrosis. In each patient, the plain abdominal radiograph showed a fragmented staghorn calculus, which is suggested as a radiological sign of pyonephrosis and indicative of the need for surgical attention.
authors.affiliation: Department of Radiology, Dudley Road Hospital, Birmingham, UK.
authors.forename: G
authors.initials: G
authors.lastname: Penter
authors.forename: D G
authors.initials: DG
authors.lastname: Arkell
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging*; D007669:Kidney Calculi / Q000000981:diagnostic imaging* / Q000209:etiology / Q000601:surgery; D008875:Middle Aged; D011704:Pyelonephritis / Q000150:complications* / Q000601:surgery; D011859:Radiography