1. A case of generalized osteitis fibrosa cystica, due to a parathyroid adenoma, is described, occurring in a Chinaman. The parathyroid tumor was found neither by clinical examination nor at operation, but was revealed at postmortem examination.
2. It is advisable to recommend surgical exploration of the parathyroid glands in cases of generalized skeletal decalcification if associated with hypercalcaemia.