Chronic Vasitis After Mesh Herniorrhaphy: A Potential Cause of False Positive Results in 18F-FDG PET/CT Studies

We report two cases of supra-scrotal vasitis incidentally detected in patients who had undergone mesh herniorrhaphy. PET/CT in patients undergoing lymphoma work-up and health check-up revealed hypermetabolic dilatation of vas deferens in the external iliac area. There were no symptoms, and blood test results did not indicate acute inflammation. Interestingly, both had undergone herniorrhaphy for inguinal hernia. Herniorrhaphy is reported to cause vasal complications such as obstruction or inflammation, although most are asymptomatic and probably under-reported. Chronic vasitis after herniorrhaphy may be a potential cause for false positive findings on 18F-FDG PET/CT in patients undergoing work-up for various oncological indications. Received for publication August 15, 2018; revision accepted October 17, 2018. Conflicts of interest and sources of funding: none declared. Correspondence to: Seol Hoon Park, MD, Department of Nuclear Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, 877 Bangeojinsunhwando-ro, Dong-gu, Ulsan, Korea. E-mail: 79Eureka@gmail.com. Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved.

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