FDG uptake in a catheter-related thrombus simulating relapse of lymphoma.
FDG-PET imaging was performed because of suspected recurrence of lymphoma of the chest. There was an area of increased activity posterior to the left sternoclavicular joint, suspected of being a relapse. Workup showed a thrombus at the tip of a central venous line corresponding to the FDG uptake. This is explained by the inflammatory process involving and surrounding chronic thrombus. Focal activity in relation to the tip of a venous catheter is very likely to have a benign etiology. It is important to recognize this not to overdiagnose a malignancy. For a correct interpretation, it is necessary to know the patient's history and having access to current radiologic examinations.
Siösteen
Anna-Karin
AK
Department of Radiology, Karolinska University Hospital, Solna, Sweden.
Celsing
Fredrik
F
Jacobsson
Hans
H
D000293:Adolescent; D002404:Catheterization / Q000009:adverse effects*; D003937:Diagnosis, Differential; D019788:Fluorodeoxyglucose F18 / Q000493:pharmacokinetics*; D006801:Humans; D008223:Lymphoma / Q000000981:diagnostic imaging* / Q000378:metabolism*; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000000981:diagnostic imaging*; D049268:Positron-Emission Tomography / Q000379:methods; D019275:Radiopharmaceuticals / Q000493:pharmacokinetics; D020246:Venous Thrombosis / Q000000981:diagnostic imaging* / Q000209:etiology*
D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18