11. Occasionally pheochromocytoma or primary hyperparathyroidism may be the initial diagnosis. 12. Rates of OFC increase alongside cases of unchecked primary hyperparathyroidism . 13. The 2002 NIH Workshop on Asymptomatic Primary Hyperparathyroidism developed criteria for surgical intervention. 14. Osteitis fibrosa cystica is defined as the classic skeletal manifestation of advanced hyperparathyroidism . 15. He also characterized several hereditary diseases related to hyperparathyroidism . 16. Biochemical confirmation of primary hyperparathyroidism is following by investigations to localize the culprit lesion. 17. This can be an indication of hyperparathyroidism , arteriosclerosis, or trauma to tissues. 18. MEN IIA also presents with hyperparathyroidism , while MEN IIB also presents with mucosal neuroma. 19. This corresponds to a probability of primary hyperparathyroidism ( PH ) in the population of: 20. Primary hyperparathyroidism can also result from pregnancy.