Nodular fasciitis of the orbit: rapid growth phase post iatrogenic incisional trauma.

Nodular fasciitis (NF) is a benign, reactive, myofibroblastic proliferative solitary lesion that commonly develops in the subcutaneous or superficial fascia. We present a case of a 35-year-old male with a rapidly enlarging upper eyelid mass postiatrogenic incisional trauma. Subsequent en toto excisional biopsy demonstrated NF. Given the rapid clinical course of this patient and the reactive nature of NF, we hypothesize that the initial incisional trauma likely incited an inflammatory response resulting in rapid proliferation and growth of the lesion. NF accounts for <1% of all orbital lesions, and is often a clinically and pathologically difficult diagnosis to make given its propensity to mimic other benign and malignant conditions. Therefore, we recommend that en toto biopsies of orbital lesions in this anatomical area be performed rather than incisional biopsies.