title: Retroperitoneal cystic metastasis from a small clear cell renal carcinoma.
abstract: A 39-year-old housewife was referred to our hospital for the treatment of a small renal tumor. A 25 x 35 mm cystic mass that had been detected by computerized tomography scan just caudal to the renal hilus proved to be a metastasis from the renal carcinoma of clear cell type. The pathogenesis may have been due to tumor cells obstructing a lymphatic vessel draining the kidney. Cystic metastasis from renal cell carcinoma is very rare and this appears to be the second published case in the world.
authors.affiliation: Department of Urology, Cancer Institute Hospital, Tokyo, Japan. n-ishii@palette.plala.or.jp
authors.forename: N
authors.initials: N
authors.lastname: Ishii
authors.forename: J
authors.initials: J
authors.lastname: Yonese
authors.forename: T
authors.initials: T
authors.lastname: Tsukamoto
authors.forename: T
authors.initials: T
authors.lastname: Maezawa
authors.forename: Y
authors.initials: Y
authors.lastname: Ishikawa
authors.forename: I
authors.initials: I
authors.lastname: Fukui
mesh_terms: D000328:Adult; D002292:Carcinoma, Renal Cell / Q000000981:diagnostic imaging* / Q000473:pathology / Q000556:secondary* / Q000601:surgery; D003560:Cysts / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology*; D011859:Radiography; D012186:Retroperitoneal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000556:secondary* / Q000601:surgery