Abstract
We report a rare case of retroperitoneal solitary fibrous tumor associated with hypoglycemia. A 71-year-old man was aware of abdominal distension for two years before admission. He was admitted urgently to our hospital with severe hypoglycemia. A large mass was palpable filling the entire abdomen. Abdominal CT scan revealed a large mass occupying the entire abdominal cavity. We diagnosed this lesion as having arisen from the retroperitoneal space. The tumor was completely resected with severing of the feeding vessels from the right testicular artery. The resected specimen was an encapsulated elastic hard mass 31×27×16 cm in size and weighing 7.0kg. The cut surface of the specimen was white with focal necrosis. Histologically, the tumor showed a patternless proliferation of spindle cells with irregularly arranged collagen bundles in the stroma. On immunohistochemistry, the tumor cells were diffusely positive for Vimentin, CD 34 and Bcl-2. The final diagnosis was a retroperitoneal solitary fibrous tumor.
