A patient with solitary plasmacytoma cutis which later metastasized to the regional lymph nodes is presented. To our knowledge, this is the only case on record of a malignant plasmacytoma originating in the skin.
Mikhail GR, Spindler AC, Kelly AP. Malignant Plasmacytoma Cutis. Arch Dermatol. 1970;101(1):59-62. doi:10.1001/archderm.1970.04000010061010