Histiocytoma malignant fibrocystic. Definition

Medical Definition: Histiocytoma malignant fibrocystic

It is a tumor composed of histiocytes and fibroblasts and histiocytes occasionally only. Histologically similar to malignant fibrous histiocytoma of soft parts. It tends to be located in long bones in the vicinity of the knee joint, and less frequently the humerus, most commonly in the legs, and can also occur in the abdomen. Also called malignant fibrous cytoma.

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