title: False-positive hypermetabolic lesions on post-treatment PET-CT after influenza vaccination.
abstract: We report a case of a 59-year-old man with testicular germ cell tumor who showed new hypermetabolic lesions at the left axillary lymph nodes on a post-treatment positron emission tomography-computed tomography (PET-CT) scan. The hypermetabolic lesions were found to be caused by an influenza vaccination 10 days prior to the PET-CT scan and disappeared without additional treatment. To date, he is alive with complete remission.
authors.affiliation: Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
authors.forename: Jeong-Eun
authors.initials: JE
authors.lastname: Kim
authors.forename: Eun Kyoung
authors.initials: EK
authors.lastname: Kim
authors.forename: Dae Ho
authors.initials: DH
authors.lastname: Lee
authors.forename: Sang-We
authors.initials: SW
authors.lastname: Kim
authors.forename: Cheolwon
authors.initials: C
authors.lastname: Suh
authors.forename: Jung-Shin
authors.initials: JS
authors.lastname: Lee
mesh_terms: D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D005189:False Positive Reactions; D006801:Humans; D007252:Influenza Vaccines / Q000008:administration & dosage* / Q000009:adverse effects; D007273:Injections, Intramuscular; D008198:Lymph Nodes / Q000000981:diagnostic imaging* / Q000187:drug effects; D008297:Male; D008875:Middle Aged; D049268:Positron-Emission Tomography; D011237:Predictive Value of Tests; D018239:Seminoma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000473:pathology; D013736:Testicular Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000473:pathology; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D051598:Whole Body Imaging
chemical_list: D007252:Influenza Vaccines