title: Extrarenal and urothelial Wilms tumor.
abstract: Two patients with Wilms tumor are presented. One patient had a bilateral Wilms tumor with invasion of the right renal pelvis and proximal ureter. A second patient presented with a large Wilms tumor originating separate from and inferior to the left kidney. The histologic, therapeutic, and prognostic implications of these radiographic presentations are explored.
mesh_terms: D005260:Female; D006801:Humans; D007223:Infant; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging / Q000628:therapy*; D007682:Kidney Pelvis; D008297:Male; D011859:Radiography; D014516:Ureteral Neoplasms / Q000000981:diagnostic imaging / Q000628:therapy*; D009396:Wilms Tumor / Q000000981:diagnostic imaging / Q000628:therapy*