Bone Abstracts

Objective: Hypophosphataemic rickets (HPR) is associated with high concentrations of fibroblast growth factor 23 (FGF23). Chronically elevated FGF23 may impact on cardiac function and the skeleton. There is little evidence on how FGF23 changes with time in HPR or how it is affected by treatment. The aim of this study was to evaluate changes in FGF23 concentrations over time in patients with HPR.Methods: Retrospective data was collected from our Metabolic...

Background: Primary hyperparathyroidism (PH), whilst common in elderly populations, is much rarer in adolescents. Although up to 90% of cases are sporadic in nature, hereditary cases make up less than 10% of remaining causes. Multiple genetic causes and syndromes have been described in the literature including multiple endocrine neoplasia (MEN), familial hypocalciuric hypercalcemia and hyperparathyroidism-jaw tumour syndrome (HPT-JT).Presenting problem: ...

Background: Hypercalcaemia secondary to malignancy is rare in children and adolescents. Parathyroid hormone related peptide (PTH-rP) secreted by malignant cells increases bone resorption and renal calcium retention causing hypercalcaemia. We report two cases of hypercalcaemia of malignancy refractory to treatment with pamidronate and corticosteroids but responsive to treatment with Denosumab and Zoledronic acid.Case 1: Presenting problem: A 17-year-old b...