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Peripheral bone involvement of intravascular large B-cell lymphoma on 99mTc-MDP bone scan and 18F-FDG PET/CT
Sun Young Oh1, Gi Jeong Cheon, Eugene Jeong
1Department of Nuclear Medicine, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea.
Abstract:
A 64-year-old man was admitted for evaluation of recently developed anemia and bone pain. The bone scan showed diffusely active lesions in the peripheral bones, symmetrically. Interestingly, 18F-FDG PET/CT revealed the hypermetabolic changes in the peripheral bones as well as the internal organs. Biopsy of bone marrow confirmed the diagnosis of intravascular B-cell lymphoma. After the 3 cycles of R-CHOP chemotherapy, 18F-FDG PET/CT showed improvement of the previous hypermetabolic lesions, suggesting good response. Intravascular B-cell lymphoma is a rare and aggressive variant of diffuse large cell lymphoma characterized by proliferation of malignant cells within the vascular lumina.
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