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Disseminated Multi-System Sarcoidosis Mimicking Metastases on 18F-fluorodeoxyglucose positron emission tomography / computed tomographyWilliam Makis1, Mark Palayew2, Christopher Rush2, Stephan Probst21Department of Diagnostic Imaging, Cross Cancer Institute, Edmonton, Canada2Department of Nuclear Medicine, Jewish General Hospital, Montreal, Canada A 60 year old female with no significant medical history presented with hematuria. A CT scan revealed extensive lymphadenopathy with hypodensities in the liver and spleen and she was referred for an 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography / computed tomography (PET/CT) study to assess for malignancy of unknown primary. PET/CT revealed extensive 18F-FDG avid lymphadenopathy as well as innumerable intensely 18F-FDG avid lung, liver and splenic nodules, highly concerning for malignancy. A PET-guided bone marrow biopsy of the posterior superior iliac spine revealed several non-necrotizing, well-formed granulomas, consistent with sarcoidosis. The patient was managed conservatively and remained clinically well over the subsequent 9 years of follow-up. Keywords: sarcoidosis, artifact, mimic, lymphadenopathy, metastases, 18F-fluorodeoxyglucose, positron emission tomographyWilliam Makis, Mark Palayew, Christopher Rush, Stephan Probst. Disseminated Multi-System Sarcoidosis Mimicking Metastases on 18F-fluorodeoxyglucose positron emission tomography / computed tomography. . 2018; 27(2): 0-0 Corresponding Author: William Makis, Canada |
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