Athyreosis

Definicija

Athyreosis is a form of thyroid dysgenesis (see this term) characterized by complete absence of thyroid tissue that results in primary congenital hypothyroidism (see this term), a permanent thyroid deficiency that is present from birth.

Pretraga

Pun naziv

Athyreosis

Kratki naziv

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Sinonimi

NULL

Orpha broj

95713

Kategorija

Podkategorija

Naziv na stranom jeziku

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Prevalenca

1-9 / 100 000

Nasleđivanje

Autosomal dominant

Period početka bolesti

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ICD 10

E03.1

OMIM

218700  225250

UMLS

GARD

MEDDRA

Tekstualni opis
Clinical manifestations of athyreosis are often subtle or not present at birth, probably as a result of trans-placental passage of some maternal thyroid hormone. More specific symptoms and signs do not develop until several months of age. Common clinical features and signs include decreased activity and increased sleep, feeding difficulty and constipation, prolonged jaundice, myxedematous facies, large fontanels (especially posterior), macroglossia, a distended abdomen with umbilical hernia, and hypotonia. Goiter is always absent. Slow linear growth and developmental delay are usually apparent by 4-6 months of age.
Etiologija
Around 2% of cases have been shown to be familial and may be caused by mutations in the FOXE1, NKX2-1, NKX2-5 or PAX8 genes (9q22, 14q13, 5q34 and 2q12-q14). Mutations that result in complete inactivation of the TSHR gene (14q31) can present with athyreosis.
Prognoza
bolest_prognoza
Diferencijalna dijagnoza
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Tretman
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Dijagnostičke metode
Imaging studies are required to confirm the diagnosis of athyreosis.
Antenatalna dijagnoza
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Epidemiologija
Prevalence is estimated at around 1/28,000. Athyreosis and thyroid hypoplasia (see this term) combined account for one-third of cases of thyroid dysgenesis.
Genetsko savetovanje
Athyreosis is generally thought to be sporadic. However, recent evidence points to the possibility of a genetic component.
Terapija
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Klinička istraživanja
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