Intradermal Proliferative Fasciitis on the Finger

Intradermal nodular fasciitis is a rare but not extraordinary pathological finding with approximately 100 cases reported since originally described in 1990. Intradermal proliferative fasciitis, however, has only been reported twice and both arose in the postauricular region. Herein, we report a third case of intradermal proliferative fasciitis and the first to occur on the finger. This case was also unusual in its slow growth, and complete lack of smooth muscle actin expression that has only been reported once before.