ESPE Abstracts

Background: Multiple organ dysfunction occurs in mitochondrial diseases (MDs). MDs are sometimes difficult to diagnose, because patients have solitary and/or combination of various symptoms including short stature, diabetes, myopathy, and seizure. Since plasma levels of lactate and pyruvate are not always the perfect biomarker for MDs, there are many pseudo-mitochondrial patients who are suspect for MDs. Diagnosis for MDs often requires muscle biopsy, gene analysis, and measur...

Introduction: DAX1 (dosage-sensitive sex reversal, adrenal hypoplasia critical region, on chromosome X, gene 1) plays an important role in developing the adrenal gland and testis during embryonic stage. On the other hand, overexpressed DAX1 causes 46,XY disorders of sex development (DSD), in which patients often have short stature, mental retardation, and telecanthus. Here we report a case of 46,Y,dup(X)(p21.2p22.2) DSD caused by overexpressed DAX1.Case ...

Background: The overall incidence of Cushing’s syndrome in children is ~0.2–0.5 new cases per million people per year. Cushing’s disease is more infrequent under 7-year-old children. The typical symptoms are not often observed in childhood. Therefore, the early diagnosis is difficult, when pituitary tumour is not detected by pituitary MRI.Objective and hypotheses: A 5-year-old boy was referred to our hospital by a decrease in growth veloci...

Background: Graves’ disease (GD) is most prevalent autoimmune disorder in adult. The annual incidence in adult woman is approximately 0.5 in 1 000, and in adult men is one tenth as common as in women. GD is rare in children, with an annual incidence of 0.8 in 100 000, and with six times more common in girls, thus, GD in boys is very rare. An annual incidence of GD under 10 year-old is extremely rare. Spontaneous transient thyrotoxicosis with pregnancy is sometimes happene...

Introduction: 21-hydroxilase deficiency (21OHD) is the most common form of congenital adrenal hyperplasia. Mutations of CYP21A2 induces 21OHD, a rare autosomal recessive manner. CHARGE syndrome (CS) is a rare autosomal dominant manner that is typically caused by heterozygous chromodomain helicase DNA binding protein-7 (CHD7) mutations. Here, we report the combination cases with genetically diagnosing 21OHD and CS at the first time.Case:...

Introduction: Temple syndrome (TS14) caused by maternal uniparental disomy chromosome 14 (UPD(14)mat), paternal deletions and the imprinting defect affecting the 14q32.2 imprinted region is associated with non-specific symptoms such as growth failure, precocious puberty, obesity, and diabetes mellitus (DM). Some TS14 cases are misdiagnosed as having Prader–Willi syndrome (PWS). In TS14, patient’s intelligence quotient (IQ) is usually normal, and autism spectrum disor...

Background: The MC2R gene (MC2R) encodes the receptor for ACTH, and MC2R mutations cause ACTH resistance. We describe a MC2R mutation-carrying ACTH resistance patient, who exhibited generalized hyperpigmentation at birth.Objective and hypotheses: The MC2R encodes the receptor for ACTH, and MC2R mutations cause ACTH resistance. We describe a MC2R mutation-carrying ACTH resistance patient, who exhibited generalised hyperpigmentat...

Introduction: Polydipsia and polyuria are one of the common chief complaints in the field of pediatric endocrinology. The differential diagnosis of polydipsia and polyuria are various diseases including diabetes mellitus (DM), central diabetes insipidus (CDI), and primary polydipsia (PP). Although DM is not difficult to diagnose, between DI and PP is sometimes difficult.Aim: The objective of our study is to reveal the in...