Aggressive fibromatosis of the parotid gland

Vishaal Patel, MD; Virginia Falvello, MD; Marion Hughes, MD; Barry Schaitkin, MD

Abstract

Extra-abdominal fibromatosis (EAF) is a rare, locally aggressive tumor that originates in fascial structures. It accounts for less than 0.3% of all tumors diagnosed. Head and neck tumors account for only 7% of those, and only a few cases occurring in the parotid gland have been previously reported. We describe the case of a 34-year-old woman who presented with a painful parotid mass. She was found to have an EAF of her right parotid gland. Medical management with antibiotics and immunosuppression therapy was unsuccessful. Surgical resection was required for both a definitive diagnosis and management. Preoperative findings on computed tomography, magnetic resonance imaging, and both fine-needle aspiration biopsy and surgical biopsy were nonspecific, as is typical in EAF cases.

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