Hiperplasia adrenal congênita / Congenital adrenal hyperplasia

A hiperplasia adrenal congênita (HAC) é um grupo de doenças de transmissão autossômica recessiva, em que os defeitos enzimáticos levam à síntese deficiente do cortisol e excesso de androgênios adrenais. A deficiência da 21?-hidroxilase é a forma mais frequente. Na HAC clássica o excesso de androgênios resulta em virilização e desenvolvimento de genitália ambígua no recém-nascido do sexo feminino e, quando não diagnosticada, alta mortalidade no sexo masculino. É necessário um diagnóstico preciso e urgência no início do tratamento para prevenir a mortalidade e as morbidades que acompanham esta doença. Os autores apresentam de forma prática e concisa como diagnosticar, tratar e prevenir complicações.

Health related quality of life of children and adolescents with congenital adrenal hyperplasia in Brazil.

BACKGROUND: Congenital Adrenal Hyperplasia (CAH) is an endocrine disorder characterized by enzymatic deficiency in adrenal steroidogenesis, leading to adrenal insufficiency and hyperandrogenism. Patients need continuous hormone replacement therapy, but adequate control has proven challenging, exposing patients to undesirable consequences of both disease and treatment. OBJECTIVE: To evaluate the health related quality of life (HRQoL) of children and adolescents with CAH due to 21-hydroxylase deficiency. METHODS: In an analytical study, generic questionnaires, validated and translated versions, Pediatric Quality of Life Inventory 4.0 (for self-assessment of patients) and Child Health Questionnaire - PF50 (for parents) were applied and mean scores were analyzed with Student's t-test. RESULTS: We included 25 patients (19 female) with classical CAH (14 salt wasting/11 simple virilizing), mean age ± standard deviation (SD) of 11.4 ± 3.6 years (5-17.9), and their parents. Self-assessment of HRQOL showed decrease in mean scores: overall (67.8 ± 15.5 vs. 88.9 ± 7.4, p value = 0.015) and in the physical (75.2 ± 15.0 vs. 95.9 ± 5.8, p value = 0.014) and psychosocial (63.9 ± 17.8 vs. 85.0 ± 9.6, p value = 0.023) dimensions of patients, compared to healthy controls (previously published national data on children and adolescents). The assessment of the parent's view was concordant, also showing losses in the physical (43.7 ± 8.0 vs. 55.1 ± 3.6, p value = 0.013) and psychosocial (41.9 ± 9.7 vs. 53.0 ± 7.0, p value = 0.025) dimensions. The comparison of HRQOL between subgroups 1) males versus females and 2) salt-wasting versus simple virilizing showed no significant differences. CONCLUSION: There seems to be a loss of HRQOL in children and adolescents with classical CAH. The self-assessment was concordant in key areas with the assessment made by their parents. No differences were observed between genders or clinical presentation of the disease.

Bone mineral density in children and adolescents with congenital adrenal hyperplasia.

Chronic glucocorticoid therapy is associated with reduced bone mineral density. In paediatric patients with congenital adrenal hyperplasia, increased levels of androgens could not only counteract this effect, but could also advance bone age, with interference in the evaluation of densitometry. We evaluate bone mineral density in paediatric patients with classic congenital adrenal hyperplasia taking into account chronological and bone ages at the time of the measurement. Patients aged between 5 and 19 years underwent radiography of the hand and wrist followed by total body and lumbar spine densitometry. Chronological and bone ages were used in the scans interpretation. In fourteen patients, mean bone mineral density Z-score of total body to bone age was -0.76 and of lumbar spine to bone age was -0.26, lower than those related to chronological age (+0.03 and +0.62, resp.). Mean Z-score differences were statistically significant (P = 0.004 for total body and P = 0.003 for lumbar spine). One patient was classified as having low bone mineral density only when assessed by bone age. We conclude that there was a reduction in the bone mineral density Z-score in classic congenital adrenal hyperplasia paediatric patients when bone age was taken into account instead of chronological age.

Hipotireoidismo na criança / Childhood hypothyroidism

Hipotireoidismo é uma doença causada pela disfunção da glândula tireoide ou por deficiência do hormônio hipofisário estimulador da tireoide (TSH). Os autores apresentam as diversas etiologias e as peculiaridades da clínica, da investigação diagnóstica e das complicações da doença nas várias fases da vida da criança. Enfatizam detalhes da triagem neonatal, assim como a necessidade do tratamento precoce no hipotireoidismo congênito para prevenir o retardo mental irreversível...

Septo-optic dysplasia.

Septo-optic dysplasia (SOD), also referred to as de Morsier syndrome, is a rare congenital condition, characterized by two of the classic triad features: midline brain abnormalities, optic nerve hypoplasia (ONH) and pituitary endocrine dysfunction. We report 5 children with SOD, originally referred to be evaluated due to short stature, who also presented bilateral optic nerve hypoplasia, nystagmus and development delay. In 4 of the patients, we identified neuroimaging abnormalities of the hypothalamo-pituitary axis such as anterior pituitary hypoplasia (3/5), ectopic posterior pituitary (4/5), thin or absent stalk (3/5) and empty sella (1/5). We also encountered diverse pituitary deficiencies: growth hormone (3/5), adrenocorticotropic hormone (3/5), thyroid-stimulating hormone (2/5) and antidiuretic hormone (1/5). Only one child presented intact pituitary function and anatomy. Although rare, SOD is an important cause of congenital hypopituitarism and it should be considered in children with optic nerve hypoplasia or midline brain abnormalities for early diagnosis and treatment.

Septo-optic dysplasia / Displasia septo-óptica

Septo-optic dysplasia (SOD), also referred to as de Morsier syndrome, is a rare congenital condition, characterized by two of the classic triad features: midline brain abnormalities, optic nerve hypoplasia (ONH) and pituitary endocrine dysfunction. We report 5 children with SOD, originally referred to be evaluated due to short stature, who also presented bilateral optic nerve hypoplasia, nystagmus and development delay. In 4 of the patients, we identified neuroimaging abnormalities of the hypothalamo-pituitary axis such as anterior pituitary hypoplasia (3/5), ectopic posterior pituitary (4/5), thin or absent stalk (3/5) and empty sella (1/5). We also encountered diverse pituitary deficiencies: growth hormone (3/5), adrenocorticotropic hormone (3/5), thyroid-stimulating hormone (2/5) and antidiuretic hormone (1/5). Only one child presented intact pituitary function and anatomy. Although rare, SOD is an important cause of congenital hypopituitarism and it should be considered in children with optic nerve hypoplasia or midline brain abnormalities for early diagnosis and treatment.

A displasia septo-óptica (DSO, síndrome de Morsier) é uma condição congênita rara definida por dois critérios da tríade: defeitos de linha média, hipoplasia de nervo óptico e insuficiência hipotálamo-hipofisária. Descrevemos 5 casos de DSO, encaminhados por baixa estatura, com hipoplasia dos nervos ópticos, nistagmo e atraso global do desenvolvimento. Destes, 4 possuem alteração na ressonância magnética de sela túrcica e insuficiência hipotálamo-hipofisária, tendo sido observada adeno-hipófise hipoplásica (3/5), neuro-hipófise ectópica (4/5), haste afilada/ausente (3/5) e sela vazia (1/5), além de déficit dos eixos somatotrófico (3/5), adrenocorticotrófico (3/5), tireotrófico (2/5) e do hormônio antidiurético (1/5). Apenas um paciente não apresenta alteração anatômica ou funcional do eixo hipotálamo-hipofisário. Embora rara, a DSO é causa importante de hipopituitarismo congênito, devendo ser considerada em crianças com hipoplasia de nervo óptico ou defeito de linha média para seu diagnóstico e tratamento precoces, evitando seqüelas graves.