Bone Abstracts

Primary hyperparathyroidism is extremely rare in childhood and adolescence. Here we report a clinical case of a 15-year-3-month-old boy who began 2 years before with pain in his knees, genu varum, and fatigue. Physical examination showed severe genu valgum with an inter-malleolar distance of more than 30 cm. Biochemical tests showed hypercalcemia (12.2 mg/dl), hypophosphatemia (2.3 mg/ dl), hypercalciuria (6.4 mg/kg per day), high alkaline phosphatase (2812 IU/l), low 25-hydro...