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Primary cutaneous diffuse large B-cell lymphoma is an uncommon type of non-Hodgkin lymphomas. A 51-year-old man had 2 gradually enlarging reddish, firm, and painless cutaneous-subcutaneous masses surrounded with some erythematous patches on his back for 3 years. Skin biopsy result was consistent with diffuse large B-cell lymphoma. FDG PET/CT was performed for staging and demonstrated bilaterally increased FDG uptake in the cutaneous masses with hypermetabolic left axillary lymph nodes. After chemotherapy, FDG PET/CT demonstrated that all FDG-avid lesions resolved, and there is a complete response to therapy.
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Kalender et al. (2011) studied this question.
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