title: [A case of renal cyst associated with renal cell carcinoma--characteristics of intracystic fluid associated with renal cell carcinoma from Japanese reports].
abstract: The patient was a 56-year-old male. Renal cyst and intracystic mass were incidentally found in the right kidney by ultrasound sonography. Intracystic mass was enhanced. At operation, intracystic fluid was clear and yellow, and its cytology was negative. However, rapid histological examination of the intracystic mass showed malignancy. Accordingly, nephrectomy was performed. We then reviewed the characteristics of the intracystic fluid in renal cell carcinoma reported in Japan and found that 70% was bloody intracystic fluid and 30% showed positive cytology. These findings suggested that we should to be more careful when diagnosing renal cyst associated with renal cell carcinoma only by the examination of the intracystic fluid.
authors.affiliation: Department of Urology, Osaka City University Medical School.
authors.forename: T
authors.initials: T
authors.lastname: Omachi
authors.forename: W
authors.initials: W
authors.lastname: Sakamoto
authors.forename: T
authors.initials: T
authors.lastname: Kishimoto
authors.forename: M
authors.initials: M
authors.lastname: Kawano
authors.forename: A
authors.initials: A
authors.lastname: Oyama
authors.forename: M
authors.initials: M
authors.lastname: Kamizuru
authors.forename: M
authors.initials: M
authors.lastname: Maekawa
authors.forename: S
authors.initials: S
authors.lastname: Hagihara
authors.forename: K
authors.initials: K
authors.lastname: Nakamura
mesh_terms: D001826:Body Fluids / Q000166:cytology; D002292:Carcinoma, Renal Cell / Q000150:complications*; D006801:Humans; D052177:Kidney Diseases, Cystic / Q000150:complications* / Q000473:pathology; D007680:Kidney Neoplasms / Q000150:complications*; D008297:Male; D008875:Middle Aged