Simple cyst of the thyroid gland.
D000328:Adult; D003560:Cysts / Q000175:diagnosis* / Q000628:therapy; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D011677:Punctures; D011877:Radionuclide Imaging; D013959:Thyroid Diseases / Q000175:diagnosis* / Q000628:therapy; D014463:Ultrasonography