Nodular fasciitis.

Thompson LD.
Ear Nose Throat J. 2002 Dec;81(12):830.
FIRST PARAGRAPH: Nodular fasciitis is generally regarded as a benign, reactive, tumor-like proliferation of myofibroblasts. It quite commonly occurs in the head and neck region in young patients shortly after they develop an enlarging mass (ulceration is infrequent). In some cases, nodular fasciitis is associated with antecedent trauma.
PubMed ID: 12516376
Article Size: <1 MB