A rare case of primary cutaneous plasmacytoma

Primary cutaneous plasmacytoma (PCP) is a rare extramedullary neoplasm, which poses a challenge for dermatologists, hematologists, and dermatopathologists. Since it was first described by Hedinger et al in 1911, there are only 35 solitary documented cases. According to Torne et al, in order to be classified as PCP, lesions must fulfill the following criteria: (1) solitary focus of plasmacytoma proven by biopsy, (2) normal bone marrow findings (less than 10% plasma cells), and (3) no evidence of disseminated disease.
Source: Journal of the American Academy of Dermatology - Category: Dermatology Source Type: research