Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0039483 (giant cell arteritis)
 3,204 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Fever of unknown origin (FUO) is a challenging diagnosis. Recently, 18F-fluorodeoxyglucose positron-emission tomography (FDG-PET) has emerged as an useful exam to its diagnosis. The authors present a case of a 64-years-old woman with an aortic mechanical valve that was admitted to the internal medicine department because of fever, weakness and weight loss of 2 months duration. Her physical examination was unremarkable. Laboratory findings showed microcytic anemia, no leukocytosis, and elevated C-reactive protein and erythrocyte sedimentation rate. Microbiology, immunology and imaging studies were normal. A FDG-PET was performed, which showed 18F-FDG uptake in aorta and its branches arterial wall. Treatment with corticosteroids was started with good response. This exam, although not sensitive for temporal arteritis when only smaller vessels are involved, permits the diagnosis of large vessel vasculitis with involvement of arteries that can not be biopsied.
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PMID:[Large vessel vasculitis in a patient with fever of unknown origin]. 2035 Apr 72

PET/CT is starting to play an important role in evaluating fever of unknown origin (FUO), due to its ability to localize and delineate areas of high metabolic activity, such as neoplastic proliferation and inflammation, including vasculitis. We present a case of giant cell arteritis (GCA) in a 72-year-old female patient admitted to our department with a 4-month history of FUO, weight loss and fatigue, without specific symptoms or signs. Laboratory investigations suggested acute phase response, with a pronounced erythrocyte sedimentation rate, high CRP level and microcytic anemia. A thorough diagnostic evaluation was performed to exclude an unknown primary tumor, which was initially suspected due to a positive family history of cancer. Surprisingly, PET/CT revealed large vessel vasculitis affecting the ascending, descending and abdominal aorta, as well as subclavian, proximal brachial and carotid arteries bilaterally. Biopsy of the superficial temporal artery confirmed the diagnosis of GCA. Treatment with methylprednisolone and azathioprine led to resolution of clinical symptoms and normalization of laboratory parameters. In addition to the use of PET/CT in the evaluation of FUO, its value as a method complementary to temporal artery biopsy is also discussed.
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PMID:Fever of unknown origin: large vessel vasculitis diagnosed by PET/CT. 2245 31