title: [A tricky issue for the ultrasound technician].
abstract: A 72-year-old woman presented with chronic renal failure and diffuse abdominal pain. On ultrasonography the right kidney showed an uncommon site, whereas the left kidney presented a pseudo mass on its lower pole. MRI detected a multiple anatomic anomaly: dislocation of the right kidney, renal fusion, malrotation of the left kidney. This anatomic anomaly is called ''sigmoid kidney'': it can be asymptomatic or result in genitourinary diseases.
authors.affiliation: S.C. di Nefrologia e Dialisi, Ospedale Dimiccoli, Barletta, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Mancini
authors.forename: R
authors.initials: R
authors.lastname: Losappio
authors.forename: V
authors.initials: V
authors.lastname: Giancaspro
authors.forename: F
authors.initials: F
authors.lastname: Petrarulo
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D007668:Kidney / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D014463:Ultrasonography