Nodular fasciitis: A diagnostic dilemma on cytology

Background: Nodular Fascitis is a pseudosarcomatous tumor. It is a reactive process rather than true neoplasm. It is very difficult to diagnose on cytology, hence can be mistaken for other malignant mesencymal tumor. CASE : 14yr female presented with right forearm swelling since 1yr. Clinical diagnosis was Fibroma. USG-guided FNAC done. FNAC and Histopathology section shows pleomorphic, bizarre spindle cells and multinucleated cells. Differential Diagnosis were given on FNAC and Histopathology which was confirmed on Immunohistochemistry as Nodular Fascitis. Though Nodular Fascitis is common in young adult but it’s bizarre finding on histopathology and FNAC should not be mistaken for malignant tumor , hence clinical, radiological and pathological correlation is needed.