[Crossed renal ectopia: radiological possibilities of helicoidal CAT]. / Ectopia renal cruzada: posibilidades radiológicas de la TAC helicoidal.

OBJECTIVES: To evaluate the diagnostical possibilities of helicoidal CAT in crossed renal ectopy (CRE) and review 36 cases published in Spain, including our 3 new patients. CLINICAL CASES: We present two women and a man aged between 54 and 82 who were diagnosed of left CRE. One of them showed an ureterocele and other one presented a splenic angiosarcoma. DISCUSSION: Main embriological theories, clinical presentation, associated anomalies and different radiological systems used in the diagnosis of this infrequent congenital malformation are evaluated.