title: FDG uptake in a catheter-related thrombus simulating relapse of lymphoma.
abstract: 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.
authors.affiliation: Department of Radiology, Karolinska University Hospital, Solna, Sweden.
authors.forename: Anna-Karin
authors.initials: AK
authors.lastname: Siösteen
authors.forename: Fredrik
authors.initials: F
authors.lastname: Celsing
authors.forename: Hans
authors.initials: H
authors.lastname: Jacobsson
mesh_terms: 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*
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18