ESPE Abstracts

Introduction: Hyperostosis-hyperphosphataemia syndrome (HHS) is a rare autosomal recessive condition caused by inactivating mutations in the GALNT3 gene, characterised by elevated serum phosphate and 1,25(OH)2 vitamin D, increased urinary tubular reabsorption of phosphate and hyperostosis of long bones.Case report: A 15-year-old boy (weight +1.05 SD; height −0.1 SD) with consanguineous parents of Palestinian descent, presented w...

Background: Ovotesticular disorders of sexual development (DSD) are a rare form of DSD with co-existence of both ovarian and testicular tissue in one or both gonads.Case report: A term infant (weight +1.38 SDS) presented at birth with severe penoscrotal hypospadias, a small phallus and a right hemiscrotum with descended gonad (external masculinization score 1.5). Pelvic ultrasound revealed no Mullerian structures, a small right gonad with probable epidid...

Introduction: Xanthogranulomatous hypophysitis (XGH) is a very rare form of pituitary hypophysitis that may present both clinically and radiologically as a neoplastic lesion or craniopharyngioma. Our case series compares the paediatric and adult presentations of XGH and the differential diagnoses considered.Case series: Patient 1: A 15-year-old female presented with refractory headache, lethargy, short stature, delayed growth (weight (−3.3...

Background: Over-dosing and under-dosing of vitamin D in children and young people appears to be common, based on our audit of current practice. The contribution of ethnicity, skin colour, and vitamin D binding protein (VDBP) genotype has not been fully explored during vitamin D treatment.Objective: To investigate how ethnicity/skin colour and genetic variation affect the response to 150 000 units of vitamin D administered to young adults of White Caucas...