Tra bod soft fibroma fel arfer yn ymddangos mewn plygiadau croen fel y gwddf (neck), cynffon (armpit), ac ardaloedd genital, gallant hefyd, er yn anaml, ffurfio ar y nipple. Dylai meddygon gadw soft fibroma mewn cof wrth werthuso annormaleddau'r nipple. Although soft fibromas occur in the intertriginous area, including on the neck, axillae, and vulvovaginal locations, in rare cases, they can develop in the nipple. Doctors should consider soft fibroma as one of the differential diagnoses for nipple lesions.