[Course of malignant histiocytosis]

This report deals with a 47-year-old patient showing the beginning of a malignant histiocytosis in both eyelids and the orbit. The histology of the tumor confirmed a malignant histiocytosis, which generalized in a systemic, progressive, invasive proliferation of atypical histiocytes. The patient died 3 years after the beginning of the disease.