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Retroperitoneal Liposarcoma: an Autopsy Case*
Liposarcoma is very rare mesenchymal tumor that occurs in deep soft tissue and mostly seen in limbs and retroperitoneum, accounts for 24% of extremity and 45% of retroperitoneal soft tissue sarcomas. Retroperitoneal liposarcomas are typically present with advanced disease and often carry a poor prognosis. Retroperitoneal liposarcomas grow slowly in the very expandable retroperitoneal space in the deeply hidden and clinically silent therefore diagnosis is usually made late. Liposarcomas have five histological subtypes; well-differentiated liposarcoma (WDLS), dedifferentiated liposarcoma (DDLS), pleomorphic, myxoid and round cell liposarcoma. Our case is 81-year-old male who was found dead in the village homeless shelter. This was classified as a suspicious death and transferred to our service for autopsy. The external examination revealed rectal prolapse, abdominal distension and scrotal swelling. The internal autopsy showed green membrane on the peritoneum, brown smelly contents in the abdominal space, a perforation area 1.5x1 cm in size that in the first part of the duodenum and the dimension of tumor was 48x30x6 cm in the retroperitoneal space. The pathological report was dedifferentiated liposarcoma. We present a rare case of a dedifferentiated retroperitoneal liposarcoma with duodenal ulcer perforation.
Keywords: retroperitoneal liposarcoma, autopsy, death