Recurrent hypercalcaemia in a young man with mono-ostotic Paget's disease

A 32 year old man presented on two separate occasions with severe hypercalcaemia. Both episodes followed the fracture of a single pagetic bone but were not associated with immobilization. To our knowledge this patient, the youngest described with hypercalcaemia secondary to Paget's disease of bone is also the only reported case of recurrent hypercalcaemia in this condition.