Endocrine Abstracts

Introduction: Osteitis fibrosa cystica (OFC) or brown tumour is a non-neoplastic fibrocystic expansile lytic bone lesion caused due to excess parathormone (PTH). Brown tumour is classically known to occur in severe primary or secondary hyperparathyroidism due to end-stage renal failure with very high PTH level. OFC presenting as a mass due to nutritional vitamin D deficiency (NVD) is exceedingly rare. Case presentation: 47-year-old Caucasian gentleman pr...