Clinical pathologic conference case 3: nodular fasciitis.

Intraoral nodular nodular fasciitis is a rare entity that is important to recognize because it may simulate a malignancy clinically and histologically. The rapid growth and high mitotic index seen in nodular fasciitis may suggest a malignant neoplastic process, but it is generally considered to be a benign reactive proliferation. Recognizing the unique histologic features of nodular fasciitis is important to avoid a possible misdiagnosis as a malignancy, leading to unnecessary further treatment.