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We report two cases of primary cutaneous mucormycosis in immunocompromised patients. Although their clinical presentation showed nonspecific necrotic ulcers, the histopathologic features were diagnostic. In both cases, broad, branching, nonseptate hyphae were found in the dermis and subcutaneous tissue. In one case the hyphae could be observed in the epidermis. To our knowledge, this is the only reported case of primary cutaneous mucormycosis with hyphae detectable in the epidermis.

A case of adult cutaneous eruptive histiocytoma is reported. The lesions showed self-healing capacity in a 9-year period. Electron microscopic studies revealed comma-shaped bodies and multiple melanosomes in the cytoplasm of some cells. Normolipemic xanthelasma was present, and the patient had polyclonal gammopathy and hypocomplementemia. Resolution of the lesions produced pigmented atrophic macules. Generalized eruptive histiocytoma and benign cephalic histiocytosis could be forms of the same non-X histiocytosis.