title: Indium-111 labeled leukocyte uptake: false-positive results in noninfected pseudoaneurysms.
abstract: Indium-111 (In-111) leukocyte scintigraphy was performed in two patients with postsurgical pseudoaneurysms as part of preoperative evaluation for evidence of graft infection. Despite positive In-111 uptake by the pseudoaneurysms, surgical and pathologic examinations failed to reveal any evidence of infection. The most likely explanation for the false-positive results is the labeling of "contaminating" platelets and erythrocytes in the leukocyte mixture. Caution must be exercised in interpretation of In-111 leukocyte scans in patients with postsurgical pseudoaneurysms.
mesh_terms: D000783:Aneurysm / Q000000981:diagnostic imaging*; D005263:Femoral Artery / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans; D007204:Indium / Q000378:metabolism; D007962:Leukocytes / Q000378:metabolism; D008875:Middle Aged; D011868:Radioisotopes; D011877:Radionuclide Imaging
chemical_list: D011868:Radioisotopes; D007204:Indium