Hypercalcemia is a frequent manifestation of human T-cell lymphotrophic virus type I (HTLV-I)-associated adult T-cell leukemia/lymphoma (ATL). Human T-cell lymphotrophic virus type I infection is endemic in the Caribbean, Japan, Melanesia, and Africa. This article presents two cases of ATL to increase awareness of the disease by primary care physicians. The management of hypercalcemia is discussed.
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