title: Esophageal tracer retention simulating substernal goiter.
mesh_terms: D000328:Adult; D004947:Esophagus; D005189:False Positive Reactions; D005260:Female; D006045:Goiter, Substernal / Q000175:diagnosis*; D006801:Humans; D011877:Radionuclide Imaging; D013667:Technetium
chemical_list: D013667:Technetium