title: Teflon granuloma mimicking a thyroid tumor.
abstract: An unusual case is presented of a patient who developed a "thyroid" nodule following injection of Polytef into the left posterior vocal cord for impaired phonation. Fine-needle aspiration cytology was interpreted as suspicious for malignant cells. Histological evaluation revealed a benign granulomatous lesion with numerous Teflon particles. Review of the literature relating to Teflon injections is presented.
mesh_terms: D000328:Adult; D001707:Biopsy, Needle; D003951:Diagnostic Errors; D005260:Female; D005547:Foreign Bodies / Q000473:pathology*; D006099:Granuloma / Q000473:pathology*; D006801:Humans; D011138:Polytetrafluoroethylene; D013959:Thyroid Diseases / Q000473:pathology*; D013964:Thyroid Neoplasms / Q000473:pathology*
chemical_list: D011138:Polytetrafluoroethylene