Abstract
We report the clinical, histological and immunological features of two cases of multinucleate cell angiohistiocytoma (MCAH) in women of 32 and 53 years of age, respectively. Clinically, MCAH occurs mostly in middle-aged women and consists of crops of reddish-purple, dome-shaped papules especially on the limbs. Histologically, the reticular dermis presents an increased number of small vascular channels with plump endothelial cells embedded in a fibrohistiocitic stroma with numerous bizarre multinucleate cells. Bizarre multinucleated cells are not specific to MCAH; they can be observed in numerous other cutaneous conditions. However, MCAH presents quite distinctive clinico-pathological findings and may be easily differentiated from other cutaneous disorders.
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