Case Report and Review of Primary Bone Diffuse Large B-Cell Lymphoma Involving the Calcaneus

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Primary bone lymphoma from diffuse large B-cell lymphoma is a very rare condition, especially in the foot. In the present case report, a 23-year-old female patient presented with long-term pain along the lateral aspect of her right calcaneus. Ancillary magnetic resonance imaging revealed a radiolucent bone tumor in the calcaneus. Computed tomography-guided biopsy of the bone was completed and revealed chronic inflammation with hematopoietic elements. The patient continued to have pain and limitation in her daily activities after the biopsy. The patient underwent surgical excision and curettage by the senior author. Pathologic examination revealed that the lesion was consistent with diffuse, large, B-cell lymphoma, stage IAE. The lesion appeared to have been completely excised at surgery, and the patient underwent 3 cycles of chemotherapy and 15 radiotherapy sessions to the calcaneus. At the last follow-up visit, the patient had been disease free for 5 years. To our knowledge, this is the first case report of primary bone, diffuse, large B-cell lymphoma of the calcaneus to be treated with a combination of surgical excision, chemotherapy, and radiotherapy.

Level of Clinical Evidence: 4

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