Soft fibroma - Mollis Fibroma https://en.wikipedia.org/wiki/Skin_tag
Mollis Fibroma (Soft fibroma) est nodulus mollis, qui maxime in collo, alis vel inguine apparet.

Informationes plurimae ― Latine
References A soft fibroma of the nipple - Case reports 36276909 
NIH
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.