title: Calyceal diverticula in children: unusual features and complications.
abstract: Calyceal diverticulum is a relatively rare lesion that is usually asymptomatic but can assume clinical significance if drainage is impaired. Three patients are presented with unusual complications directly referable to a calyceal diverticulum. One child had a mobile calculus. In 2 others, intrarenal inflammatory masses developed in the area previously occupied by a calyceal diverticulum. One of these children had proved xanthogranulomatous pyelonephritis, and the other had an infected diverticulum.
mesh_terms: D000038:Abscess / Q000209:etiology; D002675:Child, Preschool; D004240:Diverticulum / Q000000981:diagnostic imaging* / Q000601:surgery; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007669:Kidney Calculi / Q000209:etiology; D007670:Kidney Calices / Q000000981:diagnostic imaging / Q000601:surgery; D007674:Kidney Diseases / Q000000981:diagnostic imaging* / Q000209:etiology / Q000601:surgery; D007682:Kidney Pelvis / Q000000981:diagnostic imaging; D008297:Male; D011183:Postoperative Complications; D011187:Posture; D011704:Pyelonephritis / Q000209:etiology; D014567:Urography