The coexistence of renal cell carcinoma and diffuse large B-cell lymphoma with hypercalcemic crisis as the initial presentation.

We report a case of a 63-year-old Turkish man with RCC and DLBCL who showed severe hypercalcemia (calcium=15.01 mg/dl) accompanied by elevation of serum parathyroid hormone-related protein (PTH-rP) as the initial presentation. While hypercalcemia is one of the complications of various types of cancerous diseases, it has not been reported still as the first presentation of the coexistence of RCC and DLBCL. After radical nephrectomy, the patient underwent six courses of chemotherapy consisting of rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisolone and achieved a complete remission that lasts 2 years. CONLUSION: This case report describes a patient with two different malignancies (RCC and DLBCL) with the unusual presentation of hypercalcemia. We review the differential diagnosis and treatment of malignant hypercalcemia. We suggest that coexistence of DLBCL with RCC, although rare, should be considered as a possible causative in hypercalcemia of unknown underlying disease. PMID: 25110209 [PubMed - indexed for MEDLINE]
Source: Endocrine Regulations - Category: Endocrinology Tags: Endocr Regul Source Type: research