Malignant fibrous histiocytoma, myelomonocytic leukemia, and Hodgkin's disease arising in an elderly man.

A 74-year-old man developed a locally invasive malignant fibrous histiocytoma of the scalp with multiple facial recurrences and concomitant hematopoietic dysplasia occurring over a 2-year period. One month prior to his death, his hematologic profile evolved into myelomonocytic leukemia. Mixed cellularity Hodgkin's disease involving mediastinal and periportal lymph nodes, which was not suspected antemortem, was discovered at autopsy. In the experience of the authors, this association of neoplasms is unique and raises the possibility in this case of an unidentified stimulus to neoplastic transformation of cells of histiocyte/monocyte origin.