title: Renal cell carcinoma originating in a renal cyst in a 12-year-old girl.
abstract: We report a 12-year-old girl with renal cell carcinoma originating in a cyst of the left kidney. Ultrasonography revealed 2 small hyperechoic masses in the luminal side of a cyst. Although hypervascularity was not detected in the cyst by computed tomography, the possibility of malignancy could not be ruled out because of the presence of 2 solid masses. Therefore, partial left nephrectomy was performed. On histopathologic examination, the 2 solid masses within the cyst were found to be renal cell carcinoma. This patient remains disease-free at 4 years after partial nephrectomy.
authors.affiliation: Department of Organ-oriented Medicine, University of the Ryukyus, Okinawa 903-0215, Japan. kadekawa_k@yahoo.co.jp
authors.forename: Katsumi
authors.initials: K
authors.lastname: Kadekawa
authors.forename: Minoru
authors.initials: M
authors.lastname: Miyazato
authors.forename: Seiichi
authors.initials: S
authors.lastname: Saito
authors.forename: Makoto
authors.initials: M
authors.lastname: Morozumi
authors.forename: Akiko
authors.initials: A
authors.lastname: Matsuzaki
authors.forename: Naoki
authors.initials: N
authors.lastname: Yoshimi
authors.forename: Kimio
authors.initials: K
authors.lastname: Sugaya
mesh_terms: D002292:Carcinoma, Renal Cell / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D002648:Child; D015897:Comorbidity; D005260:Female; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging / Q000473:pathology; D052177:Kidney Diseases, Cystic / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D009392:Nephrectomy; D016896:Treatment Outcome; D014463:Ultrasonography