Interesting ImagesLymphoma Recurrence Along the Lymphatic Tract on 18F-FDG PET/CT Presenting as Lower Limb SwellingSabiq, Sawsan MBBS*; Tham, Wei Ying MBChB, MRCP(UK)†; Sinha, Arvind Kumar MBBS*; Loi, Hoi Yin MD, MRCP*Author Information From the *Department of Diagnostic Imaging, National University Hospital †Department of Nuclear Medicine and Molecular Imaging, Singapore General Hospital, Singapore. Received for publication July 5, 2019; revision accepted September 28, 2019. Conflicts of interest and sources of funding: none declared. Author Contributions: S.S. and W.Y.T.: write-up of case report. A.K.S.: editingand proofreading of manuscript. H.Y.L.: interpretation of scan findings, study supervision. Correspondence to: Sawsan Sabiq, MBBS, Department of Diagnostic Imaging, National University Hospital, 5 Lower Kent Ridge Rd, Singapore 119074. E-mail: firstname.lastname@example.org. Online date: December 24, 2019 Clinical Nuclear Medicine: February 2020 - Volume 45 - Issue 2 - p 139-140 doi: 10.1097/RLU.0000000000002871 Buy Metrics Abstract A 66-year-old woman with a known history of diffuse large B-cell lymphoma presented with left lower limb swelling following recent long-distance air travel. Ultrasound Doppler showed no evidence of deep vein thrombosis. In view of her medical history, an 18F-FDG PET/CT was ordered that found a soft tissue mass following the course of the femoral neurovascular bundle along the anteromedial aspect of the left thigh down to the popliteal fossa and the lateral calf muscle. This was confirmed to be tumor recurrence. Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.