title: Primary Synovial Sarcoma of the Kidney.
abstract: The case was a 40-year-old female. She visited a local doctor with a chief complaint of right side abdominal pain. A right kidney tumor measuring 10 cm in diameter was observed in an abdominal Computed Tomography (CT) scan. Based on the CT image, the possibility of angiomiolipoma (AML) could not be ruled out, but a high maximum standardized uptake value (SUVmax) of 7.8 was observed in a Positron Emission Tomography CT (PET-CT) scan and there was a possibility of malignancy. We therefore performed a transperitoneal right radial nephrectomy. Although adhesion of the tumor to the duodenum and the inferior vena cava was observed, it was possible to perform an excision. The tumor accounted for a large proportion of the excised kidney; the surrounding areas had taken on a cyst-like structure, and the interior comprised grayish brittle tissue exhibiting solid growth. Histologically, gland-like and cyst-like structures composed of cylindrical cuboidal cells and mainly characterized by the solid growth of short fusiform-shaped and oval-shaped basophilic cells were observed, and we believed it was a synovial sarcoma. There were no malignant findings in the adrenal gland. There have been approximately 30 reported cases around the world of synovial sarcoma that developed in the kidney, and we herein report this case with bibliographic considerations.
authors.affiliation: Department of Urology, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Kawahara
authors.forename: Zenkichi
authors.initials: Z
authors.lastname: Sekiguchi
authors.forename: Kazuhide
authors.initials: K
authors.lastname: Makiyama
authors.forename: Takashi
authors.initials: T
authors.lastname: Nakayama
authors.forename: Yoji
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authors.lastname: Nagashima
authors.forename: Kaoru
authors.initials: K
authors.lastname: Kita
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Namura
authors.forename: Hiroki
authors.initials: H
authors.lastname: Itou
authors.forename: Futoshi
authors.initials: F
authors.lastname: Sano
authors.forename: Narihiko
authors.initials: N
authors.lastname: Hayashi
authors.forename: Noboru
authors.initials: N
authors.lastname: Nakaigawa
authors.forename: Takehiko
authors.initials: T
authors.lastname: Ogawa
authors.forename: Hiroji
authors.initials: H
authors.lastname: Uemura
authors.forename: Masahiro
authors.initials: M
authors.lastname: Yao
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Kubota