There are several theories about origin: * There is support for a genetic predisposition, as there are alterations of short arm of chromosome 1; * Multifocality may suggest systemic enzymatic defect, resulting in abnormal elastogenesis; * Repeated trauma or friction seems unlikely, but is still a possibility.
Elastofibroma dorsi
Dermatofibroma
Aggressive infantile fibromatosis
Dermatofibrosarcoma protuberans
Diffuse infantile fibromatosis
Aggressive fibromatosis
Acral fibrokeratoma
Superficial acral fibromyxoma