Endocrine Abstracts

BackgroundSecondary hyperparathyroidism is a condition that can occur as a result of low vitamin D level. Parathyroid hormone (PTH) has the role of stimulating bone resorption by two mechanisms: direct activation of osteoblasts and indirect stimulation of osteoclast. Exostosis or bone spur is a benign tumor that consists in overgrowth of a pre-existing bone. Exostoses can affect any bone, however they are most commonly located on the bones of the joints ...