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Pediatr Dev Pathol. 2013 Sep-Oct;16(5):353-6. doi: 10.2350/13-04-1327-CR.1. Epub 2013 Jul 11.

Primary monophasic synovial sarcoma of the liver in a 13-year-old boy.

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1‚ÄČ Department of Pathology, West China Hospital, Sichuan University, 610041 Chengdu, Sichuan, China.


Synovial sarcoma originating in the liver is extremely rare, and thus far only 3 cases have been reported in the English literature. Herein, we report a primary hepatic synovial sarcoma in a 13-year-old Chinese boy. This patient present with a 10-day right upper quadrant pain, and a heterogeneous mass was documented in the right hepatic lobe by computed tomography. Subsequently, the patient underwent right hepatectomy. Histologically, the tumor exhibited classic features of monophasic synovial sarcoma. The diagnosis was confirmed by the presence of SS18 gene rearrangement and identification of SS18-SSX1 fusion transcript. Unfortunately, a relapsing mass was detected 11 months after the surgery. To the best of our knowledge, the current case is the 1st published example in the pediatric population.

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