title: False-negative thallium-technetium subtraction scintigraphy.
mesh_terms: D005188:False Negative Reactions; D006801:Humans; D008297:Male; D008875:Middle Aged; D010282:Parathyroid Neoplasms / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D013382:Subtraction Technique; D013667:Technetium; D013793:Thallium
chemical_list: D013667:Technetium; D013793:Thallium