Nodular fasciitis is a lesion that is well known for posing a diagnostic challenge to pathologists. The clinical presentation of sudden onset and fast growing rate of this soft tissue lesion along with histological features, comprising a poorly demarcated cellular myofibroblastic mitotically active lesion, frequently raises concern of malignancy.There are no specific immunohistochemical markers for nodular fasciitis and the diagnosis, until recently, was based on histological features alone. The age of occurrence and anatomical site are unhelpful in making the diagnosis as these lesions can occur at any age and at any anatomic soft tissue site, although the most frequent site is the forearm and the trunk and is more common in young adults [5]. These lesions have traditionally been considered reactive in nature because if unresected, they may involute and are not associated with malignant transformation. If the patient is quizzed, a history of trauma to the site of tumour may be obtained.
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