Ectopic thyroid nodule in the esophagus.
D002828:Choristoma / Q000000981:diagnostic imaging / Q000601:surgery; D004947:Esophagus / Q000002:abnormalities*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D013961:Thyroid Gland / Q000002:abnormalities*