Sacral insufficiency fracture (SIF) is an important and treatable cause of low back pain in at-risk groups and the elderly. We report rare demonstration of 'Honda sign' in fluoro-deoxy-glucose positron emission tomography-computed tomography (FDG PET-CT) in a case of lymphoma, which led to incidental diagnosis of SIF. Honda sign, which is classically described in bone scans in cases of SIF, was found in FDG PET-CT in our case. This suggests SIF should be suspected when similar FDG uptake pattern is encountered and may help in early detection and management of SIF.
George R. Matcuk, Scott R. Mahanty, Matthew R. Skalski, Dakshesh B. Patel, Eric A. White and Christopher J. Gottsegen (2016) Stress fractures: pathophysiology, clinical presentation, imaging features, and treatment options. Emerg Radiol23(4):365. doi: 10.1007/s10140-016-1390-5
Julien Dubreuil, Gilles Salles, Juliette Bozzetto, Jeremie Tordo, Loïc Djaïleb, Alina Berriolo-Riedinger, Julien Leenhardt, Francesco Giammarile, Michel Meignan and Andrea Skanjeti (2017) Usual and unusual pitfalls of 18F-FDG-PET/CT in lymphoma after treatment. Nuclear Medicine Communications38(7):563. doi: 10.1097/MNM.0000000000000697
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