title: Benign metastasizing thyroid struma presenting as nasal polyp.
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008875:Middle Aged; D009298:Nasal Polyps / Q000175:diagnosis*; D009362:Neoplasm Metastasis; D009669:Nose Neoplasms / Q000175:diagnosis* / Q000473:pathology; D013961:Thyroid Gland / Q000473:pathology; D013964:Thyroid Neoplasms / Q000175:diagnosis*