A huge retroperitoneal liposarcoma: case report.

[dedifferentiated liposarcoma]

Soft tissue sarcomas are rare and account for less than 1 % of all newly diagnosed malignancies . One -third of malignant tumors arising in the retroperitoneum are sarcomas . Liposarcoma is the most common soft tissue sarcoma and retroperitoneal sarcoma . Liposarcoma accounts for at least 20 % of all sarcomas in adults and up to 41 % of all retroperitoneal sarcomas . Here we present the case of a huge retroperitoneal liposarcoma and a brief literature review .A 34 -year -old woman was referred to our hospital from a local clinic , because of abdominal distention , pain , and palpable mass . On admission we found that her abdomen was markedly distended . Computed tomography showed a the huge left ovarian mass that occupied almost the entire abdominal cavity . The mass consisted mainly of fat , and calcified material . She was operated under the diagnosis of a huge teratoma . The tumor was located in the retroperitoneal cavity and it abutted the left adnexa . The retroperitoneal tumor , including the left adnexa was removed . The tumor measured 22 x 15 x 11 cm , and showed many histological and pathological findings . On the basis of the histopathological finding , the tumor was diagnosed as a dedifferentiated liposarcoma of the retroperitoneum . The patient is presently undergoing radiation therapy .In retroperitoneal liposarcoma , histological subtype , incomplete resection , contiguous organ resection , and older age are strongly associated with tumor -related mortality . For liposarcoma , it is necessary to customize the treatment strategy on a case-by -case basis .

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dedifferentiated liposarcoma

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