Abstract
Tumefactive fibroinflammatory lesions of the head and neck are idiopathic, histologically benign, tumor-forming lesions that clinically simulate malignancies. Their histopathologic appearance is nearly identical to that of fibrosclerotic lesions of the mediastinum and retroperitoneum and Riedel's thyroiditis, and in some cases, a congeneric (periarteritis) origin is postulated. There is no optimum treatment, and recurrence and persistence are common. The suggested initial treatment is corticosteroid administration.
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