Interesting Images18F-FDG Uptake of Localized Malignant Peritoneal MesotheliomaKodama, Eriko MD*; Kodama, Toshiki MD†; Ichikawa, Tamaki MD, PhD*; Ikoma, Haruka MD‡; Hashimoto, Jun MD, PhD*Author Information From the Departments of *Radiology †Gastroenterology and Hepatology ‡Pathology, Tokai University School of Medicine, Isehara, Japan. Received for publication August 16, 2019; revision accepted October 18, 2019. Conflicts of interest and sources of funding: none declared. Correspondence to: Eriko Kodama, MD, Department of Radiology, Tokai Universtity School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan. E-mail: email@example.com. Online date: December 24, 2019 Clinical Nuclear Medicine: February 2020 - Volume 45 - Issue 2 - p 161-163 doi: 10.1097/RLU.0000000000002901 Buy Metrics Abstract We present 2 cases of malignant peritoneal mesothelioma (MPM) characterized by a localized solid mass without ascites and showing 18F-FDG uptake. A 79-year-old man with a history of asbestos exposure suffered from an epithelioid MPM originating from the hepatoduodenal ligament with FDG uptake (SUVmax 16.8). Another 80-year-old man with esophageal cancer showed desmoplastic MPM of the small bowel mesentery with FDG uptake (SUVmax 4.0). Desmoplastic MPM is more aggressive and yields poorer prognosis compared with the epithelioid type. However, the present desmoplastic MPM case showed mild FDG uptake because of rich fibrosis. Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.