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  • Wrong UID 425809
1.

Thyroid agenesis

In 80 to 85% of cases, congenital hypothyroidism is associated with, and presumably is a consequence of, thyroid dysgenesis (Macchia et al., 1998). In these cases, the thyroid gland can be absent (agenesis), ectopically located, and/or severely reduced in size (hypoplasia). When thyroid hormone therapy is not initiated within the first 2 months of life, congenital hypothyroidism can cause severe neurologic, mental, and motor damage (cretinism). [from OMIM]

MedGen UID:
289647
Concept ID:
C1563716
Congenital Abnormality
2.

Hypothyroidism, congenital, nongoitrous, 1

Resistance to thyroid-stimulating hormone (TSH; see 188540), a hallmark of congenital nongoitrous hypothyroidism, causes increased levels of plasma TSH and low levels of thyroid hormone. Only a subset of patients develop frank hypothyroidism; the remainder are euthyroid and asymptomatic (so-called compensated hypothyroidism) and are usually detected by neonatal screening programs (Paschke and Ludgate, 1997). Genetic Heterogeneity of Congenital Nongoitrous Hypothyroidism CHNG2 (218700) is caused by mutation in the PAX8 gene (167415) on chromosome 2q12-q14; CHNG3 (609893) maps to a locus on chromosome 15q25.3; CHNG4 (275100) is caused by mutation in the TSHB gene (188540) on chromosome 1p13; CHNG5 (225250) is caused by mutation in the NKX2-5 gene (600584) on chromosome 5q34; and CHNG6 (614450) is caused by mutation in the THRA gene (190120) on chromosome 17q21.1. [from OMIM]

MedGen UID:
487729
Concept ID:
C3493776
Disease or Syndrome
3.

Hypothyroidism, congenital, nongoitrous, 5

MedGen UID:
388687
Concept ID:
C2673630
Disease or Syndrome
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