title: Benign renal tumors detected among healthy adults by abdominal ultrasonography.
abstract: Renal ultrasonography was performed on 17,941 healthy adults without any signs suggestive of urinary tract malignancies. Diffusely hyperechoic renal masses indicative of angiomyolipoma were found in 41 (0.23%) of them and those with echogenic image suggestive of renal cell carcinoma in 45 (0.25%). Final diagnosis of the former group included 24 angiomyolipoma, 1 renal cell carcinoma, 9 calculus and 7 normal variants. The latter group included 19 renal cell carcinomas, 1 leiomyoma, 1 cavernous hemangioma and 24 normal variants or cysts. In total, 24 (0.13%) angiomyolipomas, 20 (0.11%) renal cell carcinomas, 1 leiomyoma, and 1 cavernous hemangioma were discovered. The results indicate that asymptomatic benign renal tumors mainly consisting of angiomyolipoma are not uncommon.
authors.affiliation: Division of Urology and Diagnostic Imagings, Kanto Central Hospital, Tokyo, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Fujii
authors.forename: J
authors.initials: J
authors.lastname: Ajima
authors.forename: K
authors.initials: K
authors.lastname: Oka
authors.forename: A
authors.initials: A
authors.lastname: Tosaka
authors.forename: Y
authors.initials: Y
authors.lastname: Takehara
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D018207:Angiomyolipoma / Q000000981:diagnostic imaging; D002292:Carcinoma, Renal Cell / Q000000981:diagnostic imaging; D005260:Female; D006392:Hemangioma, Cavernous / Q000000981:diagnostic imaging; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging*; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging*; D007889:Leiomyoma / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D014463:Ultrasonography