<unk>  typically presents as a solitary painless, smooth, flesh-colored to red, dome-shaped nodule located on the dorsal or lateral aspect of a finger or toe but sparing the thumb or great toe; they occur principally in the first two years of life with about 1/3 of cases having a lesion since birth. However: 1) lesions with appearances similar to, and diagnosed as, IPF have been described in extra<unk>  sites such as the arm, breast, tongue, thigh, and chest; 2) unusual cases have presented with multiple lesions, i.e. 2-3, uncommonly 7-15, and one case with 74 lesions in a 2018 review study; 3) cases have been reported in children up to the age 10 and one case was reported in a 52-year-old adult; 4) the lesions are typically smaller than 2 cm in maximum diameter but rarely have been tumor-sized, e.g. 4.5 cm; 5) the lesions, particularly when larger-sized, may be painful and/or compromise the functions of nearby joints and digits; and 6) the lesions occasionally invade the periosteum and erode a nearby bone.
Infantile digital fibromatosis
Plantar fibromatosis
Juvenile plantar dermatosis
Superficial acral fibromyxoma
Aggressive infantile fibromatosis
Juvenile hyaline fibromatosis
Subungual exostosis
Diffuse infantile fibromatosis