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CASE REPORT
Year : 2017  |  Volume : 16  |  Issue : 2  |  Page : 166-168

False negative 18F-fluorodeoxyglucose positron emission tomography/computed tomography in primary b-cell lymphoma of the bone


1 Division of Nuclear Medicine, University of Ottawa, Ottawa, Ontario, Canada
2 Department of Nuclear Medicine, Hopital Ste-Justine, Quebec, Canada

Correspondence Address:
Matthieu Pelletier-Galarneau
Division of Nuclear Medicine, The Ottawa Hospital, General Campus, 501 Smyth Road, University of Ottawa, Ottawa, Ontario K1H 8L6
Canada
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DOI: 10.4103/1450-1147.203070

PMID: 28553187

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We present a case of a 15-year-old male with primary bone lymphoma who was initially referred for suspicion of chronic osteomyelitis of the mandible. A bone scan and gallium scan demonstrated congruent uptake in the mandible, suggestive of chronic osteomyelitis. A biopsy subsequently showed B-cell lymphoma of the bone with low Ki-67. A fluorodeoxyglucose positron emission tomography (FDG-PET) scan performed before therapy for staging revealed no increased uptake in the mandible. This case shows an atypical presentation of a rare disorder and is presented to emphasize the importance of baseline FDG-PET.


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