Interesting Images“Hot Lung” Sign in Pulmonary Intravascular Large B-Cell Lymphoma on 18F-FDG PET/CTŞahin, Özlem MD∗; Kaya, Buğra MD∗; Serdengeçti, Mustafa MD∗; Çizmecioğlu, Hilal Akay MD†; Şen, Ahmet Eren MD∗Author Information From the Departments of ∗Nuclear Medicine †Internal Medicine, Meram Faculty of Medicine, Necmettin Erbakan University, Konya, Turkey. Received for publication September 22, 2019; revision accepted November 24, 2019. Conflicts of interest and sources of funding: none declared. Correspondence to: Özlem Şahin, MD, Department of Nuclear Medicine, Meram Faculty of Medicine, Necmettin Erbakan University, 42080 Meram/Konya, Turkey. E-mail: [email protected]. Clinical Nuclear Medicine: April 2020 - Volume 45 - Issue 4 - p e211-e212 doi: 10.1097/RLU.0000000000002939 Buy Metrics Abstract Intravascular large B-cell lymphoma is a rare type of non-Hodgkin lymphoma characterized by intravascular proliferation of clonal lymphocytes within the lumen of small vessels, which is often fatal. Diffuse FDG uptake in the lung without clear/evident CT findings, “hot lung,” is quasi-pathognomonic for lung intravascular large B-cell lymphoma. In this report, we present the case of a 43-year-old man who was diagnosed as having intravascular lymphoma thanks to this rare finding. Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.