This report describes the occurrence of calcinosis cutis in two patients with lupus erythematosus. The rarity of this event, in contrast to the relative frequency of this finding in patients with scleroderma or dermatomyositis, is stressed.
Kabir DI, Malkinson FD. Lupus Erythematosus and Calcinosis Cutis. Arch Dermatol. 1969;100(1):17-22. doi:10.1001/archderm.1969.01610250023005