Glomus tumors are divided into two types: (1) the classical, painful, solitary type; and (2) multiple painless hemangiomas. Forty-three cases of multiple glomus tumors have been reported; in three instances a familial pattern was recorded. This paper presents a family in which the occurrence of multiple glomus tumors is common.
Conant MA, Wiesenfeld SL. Multiple Glomus Tumors of the Skin. Arch Dermatol. 1971;103(5):481-485. doi:10.1001/archderm.1971.04000170015003