title: Osseous and nonosseous "doughnut" sign during bone scanning.
mesh_terms: D000368:Aged; D001859:Bone Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D012272:Ribs / Q000000981:diagnostic imaging; D012886:Skull / Q000000981:diagnostic imaging; D013667:Technetium
chemical_list: D013667:Technetium