Multinucleate cell angiohistiocytoma is a recently described entity. I
t is a benign vascular proliferation. Clinically, it is characterized
by violaceous red papules, often mimicking Kaposi's salcoma. Acral sit
es and face were the commonest sires. The six patient's age tvas betwe
en 41 and 64 years and sex ratio tvas equal. Microscopic features were
an increased number of blood vessels together with mononucleated and
multinucleated histiocyte-like cells with scalloped borders. Staining
of mononucleated cells with CD68, anti vimentin and anti factor XIIIa
antibodies emphasized a fibrohistiocytic origin. Loss of factor XIIIa
expression in multinucleate cells gets clue to think thar these cells
are dedifferenciated.