Korean J Intern Med.  2011 Jun;26(2):210-212. 10.3904/kjim.2011.26.2.210.

False-Positive Hypermetabolic Lesions on Post-Treatment PET-CT after Influenza Vaccination

• Kim JE
• Kim EK
• Lee DH
• Kim SW
• Suh C
• Lee JS

• KMID: 1776595
• DOI: http://doi.org/10.3904/kjim.2011.26.2.210

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.

Keyword

False positive reactions; Positron-emission tomography; Vaccination

MeSH Terms

Antineoplastic Combined Chemotherapy Protocols/therapeutic use
False Positive Reactions
Humans
Influenza Vaccines/*administration & dosage/adverse effects
Injections, Intramuscular
Lymph Nodes/drug effects/*radiography/*radionuclide imaging
Male
Middle Aged
*Positron-Emission Tomography
Predictive Value of Tests
Seminoma/*diagnosis/drug therapy/pathology/radiography/radionuclide imaging
Testicular Neoplasms/*diagnosis/drug therapy/pathology/radiography/radionuclide imaging
*Tomography, X-Ray Computed
Treatment Outcome
*Whole Body Imaging