Inflammatory fibrous histiocytoma: case report.

This report concerns a patient with inflammatory fibrous histiocytoma, who in contrast to previous reported cases, has had a long survival (20 years), without evidence of recurrent disease following treatment. An interesting but nonreproducible study was the development of leukemia in 2 of 3 Swiss strain mice following the intraperitoneal injection of a saline extract of the patient's tumor.