A Case of Primary Perivascular Epithelioid Cell Tumor of the Liver Treated by Laparoscopic Resection

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  • 腹腔鏡下に切除した肝原発血管周囲類上皮細胞腫瘍の1例
  • フククウキョウ カ ニ セツジョ シタ カン ゲンパツ ケッカン シュウイルイ ジョウヒ サイボウ シュヨウ ノ 1レイ

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Abstract

<p>The patient was a 48-year-old woman. She visited her previous physician with a chief complaint of right hypochondralgia, her abdominal ultrasonography showed a 40-mm tumor in liver S5, and she was referred to our department. Blood tests showed no particular abnormalities, but dynamic computed tomography and EOB-MRI showed that the tumor was heavily stained in the early phase and washed out in the late phase. Hepatocellular carcinoma was diagnosed, and laparoscopic S5 partial resection of the liver was performed. Histopathological examination showed large, polygonal tumor cells with eosinophilic reticulum, bright nuclear chromatin, and distinct nucleoli that had proliferated diffusely with alveolar to cord-like structures. Smooth muscle-like eosinophilic spindle-shaped tumor cells were also present in some areas. Immunostaining was positive for myogenin, vimentin, HMB-45, SMA, and CD68. Based on these findings, the patient was diagnosed with primary perivascular epithelioid tumor of the liver. Primary perivascular epithelioid cell tumor of the liver is a very rare disease. A case of primary perivascular epithelioid cell tumor of the liver that was laparoscopically resected is presented.</p>

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