Four solitary lesions of the face and ear are presented. They possess malignant cytological features but have a benign biological behavior. Moreover, they have in common distinctive features that suggest membership in the reticulohistiocytoma (reticulohistiocytic granuloma) category. The differential diagnostic possibilities are discussed. On the basis of their appearance and behavior, they are for the present labeled "pseudosarcomatous reticulohistiocytomas."
GORDON HW. Pseudosarcomatous Reticulohistiocytoma: A Report of Four Cases. Arch Dermatol. 1964;90(3):319–325. doi:10.1001/archderm.1964.01600030069015
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