Malignant Fibrous Histiocytoma Involving the Ilium in a Cat

In recent years there has been extensive recognition and documentation of a heterogenous group of human neoplasms characterized morphologically by cells with histiocytic and fibroblastic qualities [5, 8, 10, 18, 19, 21,231. There are now convincing data from tissue culture and ultrastructural studies to suggest a common histogenesis of these cells [8, 191. The generic term fibrous histiocytoma is used for those varieties considered benign. The less common malignant group includes the atypical fibrous histiocytoma, malignant fibrous histiocytoma, malignant histiocytoma and epithelioid sarcoma [8, 15, 2 11. Malignant fibrous histiocytom