title: Costal cartilage calcification presenting a doughnut appearance on 99mTc-pyrophosphate myocardial imaging.
mesh_terms: D002114:Calcinosis / Q000000981:diagnostic imaging*; D002357:Cartilage Diseases / Q000000981:diagnostic imaging*; D006321:Heart / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D012272:Ribs / Q000000981:diagnostic imaging*; D013667:Technetium
chemical_list: D013667:Technetium