PTHLH and lymphoma: In view of the co-existence of lymphoma and hypercalcaemia, with elevated PTHrP, in this woman of Jamaican origin, Human T cell lymphotrophic virus type-1 (HTLV-1) serology was sought, and was positive, giving a presumptive diagnosis of HTLV-1-induced acute adult T cell leukaemia/lymphoma (ATLL).