Focal spinal abnormalities on bone scans in ankylosing spondylitis: a clue to the presence of fracture or pseudarthrosis.
Four cases of ankylosing spondylitis are presented in which radionuclide bone studies indicated focal abnormalities of the spine. In three patients, the area of abnormal nuclide uptake corresponded to a site of pseudarthrosis, and in the fourth an acute fracture was present. As such focal lesions on bone scans are unusual in cases of chronic ankylosing spondylitis in which a complication is not apparent, their presence can be a useful finding.
D000368:Aged; D011756:Diphosphates; D004164:Diphosphonates; D050723:Fractures, Bone / Q000000981:diagnostic imaging* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011542:Pseudarthrosis / Q000000981:diagnostic imaging* / Q000209:etiology; D011859:Radiography; D011877:Radionuclide Imaging; D013124:Spinal Injuries / Q000150:complications / Q000000981:diagnostic imaging*; D013131:Spine / Q000000981:diagnostic imaging; D013167:Spondylitis, Ankylosing / Q000150:complications / Q000000981:diagnostic imaging*; D013667:Technetium; D017556:Technetium Compounds; D016698:Technetium Tc 99m Pyrophosphate
D011756:Diphosphates; D004164:Diphosphonates; D017556:Technetium Compounds; D016698:Technetium Tc 99m Pyrophosphate; D013667:Technetium; C029045:technetium Tc 99m diphosphonate