Incidental Case of Relapsing Polychondritis Detected by 18F-FDG PET/CT

Abstract A 78-year-old man had fever, persistent wheezing, and serum C-reactive protein elevation. Malignant lymphoma was suspected because of mediastinal lymph nodes swelling on CT and soluble interleukin 2 receptor elevation. Symmetric 18F-FDG uptake in the tracheobronchial tree and bilateral auricles was observed on PET/CT. He was finally diagnosed as having relapsing polychondritis by auricular cartilage biopsy. 18F-FDG PET/CT may have crucial role in evaluating the extent of inflammation and deciding the biopsy site of relapsing polychondritis. Received for publication June 21, 2017; revision accepted October 6, 2017. Conflicts of interest and sources of funding: none declared. Correspondence to: Hayato Kaida, MD, Department of Radiology, Kindai University Faculty of Medicine, Ohnohigashi 377-2, Osakasayama City, Osaka 589-8511, Japan. E-mail: kaida@med.kindai.ac.jp. Copyright © 2017 Wolters Kluwer Health, Inc. All rights reserved.

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