Nodular fasciitis affecting the masseter – A rare and rapidly growing mass

Abstract Nodular fasciitis is a rare condition characterised by rapid growth of fibroblasts and myofibroblasts. Most reported cases occur in the torso and upper limbs, with head and neck nodular fasciitis being an exceedingly rare entity. Due to its locally aggressive and rapidly growing nature, nodular fasciitis can be mistaken both on clinical and histological grounds as a malignant process. Despite this, definitive management is via surgical excision, and recurrence is unlikely. A case of facial nodular fasciitis is described, with reference to the current understanding on its clinical presentation, radiological and histological features, and management. Nodular fasciitis is an important differential when considering fast growing facial masses. Misdiagnosis as malignancy on clinical or histological grounds can lead to unnecessary wide excision, which is disfiguring and grossly unnecessary for this benign condition.