title: Tubular stasis and ectasia due to intrarenal obstruction.
abstract: Segmental tubular stasis and ectasia may be early signs of intrarenal obstruction. Case reports of 3 patients are presented. In arriving at a diagnosis, the possibility of significant underlying pathology such as calculi and neoplasm should be considered.
mesh_terms: D000328:Adult; D002295:Carcinoma, Transitional Cell / Q000150:complications / Q000000981:diagnostic imaging; D004108:Dilatation, Pathologic; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000150:complications* / Q000000981:diagnostic imaging; D007674:Kidney Diseases / Q000000981:diagnostic imaging / Q000209:etiology; D007680:Kidney Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging; D007684:Kidney Tubules / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011859:Radiography