title: X-ray study of the month. Metastatic carcinoma of the thyroid to the sphenoid sinus.
mesh_terms: D000230:Adenocarcinoma; D005260:Female; D006801:Humans; D008875:Middle Aged; D010255:Paranasal Sinus Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000556:secondary*; D011859:Radiography; D013101:Sphenoid Sinus / Q000000981:diagnostic imaging; D013964:Thyroid Neoplasms