A CASE OF RETROPERITONEAL SEROUS CYST

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  • 後腹膜漿液性嚢胞の1治験例

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Abstract

Retroperitoneal serous cyst is extremely rare, and 49 cases have been reported in the domestic literature. This paper describes a case of retroperitoneal serous cyst, with a review of the pertinent literature.<br> A 62-year-old female was seen at the hospital because of right lateral abdominal discomfort. In abdominal ultrasonography and computed tomography, cystic mass including homogeneous content of watery density was detected locating inferior to the right kidney, measuring 10×7×6cm in size, and was diagnosed as retroperitoneal cyst preoperativelly. The cyst was revealed in the retroperitoneal space, locating inferior to the right kidney and dorsal to the ascending colon besides. Gross findings of the specimen included smooth surface, thin and transilluminated capsule, measuring 10×6×5cm in size. Cross section view of the cyst revealed monoloculated, and yellowish serous fluid was standed in the cyst, measuring 230ml in quantity. Histologically, the epithelial component of cyst wall was simple cuboidal epithelium mingled cilliated cells, and strikingly resembled the ovarian tube epithelium. Accordingly, the origin of the cyst was guessed that the retroperitoneal mesothelium was metaplastically transformed to the muellerian cell system, and the definite diagnosis was made with retroperitoneal serous cyst. The patient has been in good health without a sign of recurrence for 8 months after the operation.

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