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1.

Holoprosencephaly sequence

Holoprosencephaly (HPE) is a structural anomaly of the brain in which there is failed or incomplete separation of the forebrain early in gestation. Classic HPE encompasses a continuum of brain malformations including (in order of decreasing severity): alobar, semilobar, lobar, and middle interhemispheric variant (MIHV) type HPE; a septopreoptic type has also been described. Other CNS abnormalities not specific to HPE may also occur. HPE is accompanied by a spectrum of characteristic craniofacial anomalies in approximately 80% of individuals with HPE. Developmental delay is present in virtually all individuals with the HPE spectrum of CNS anomalies. Seizures and pituitary dysfunction are common. Most affected fetuses do not survive; severely affected children typically do not survive beyond early infancy, while a significant proportion of more mildly affected children survive past 12 months. Mildly manifesting individuals without appreciable brain anomalies on conventional neuroimaging may be described as having “microform” HPE. [from GeneReviews]

MedGen UID:
38214
Concept ID:
C0079541
Congenital Abnormality
2.

Error occurred: cannot get document summary

ID:
808133

3.

Holoprosencephaly

Holoprosencephaly is a structural anomaly of the brain in which the developing forebrain fails to divide into two separate hemispheres and ventricles. [from HPO]

MedGen UID:
504813
Concept ID:
CN001246
Finding
4.

Holoprosencephaly 4

Holoprosencephaly (HPE) is a structural anomaly of the brain in which there is failed or incomplete separation of the forebrain early in gestation. Classic HPE encompasses a continuum of brain malformations including (in order of decreasing severity): alobar, semilobar, lobar, and middle interhemispheric variant (MIHV) type HPE; a septopreoptic type has also been described. Other CNS abnormalities not specific to HPE may also occur. HPE is accompanied by a spectrum of characteristic craniofacial anomalies in approximately 80% of individuals with HPE. Developmental delay is present in virtually all individuals with the HPE spectrum of CNS anomalies. Seizures and pituitary dysfunction are common. Most affected fetuses do not survive; severely affected children typically do not survive beyond early infancy, while a significant proportion of more mildly affected children survive past 12 months. Mildly manifesting individuals without appreciable brain anomalies on conventional neuroimaging may be described as having “microform” HPE. [from GeneReviews]

MedGen UID:
374488
Concept ID:
C1840528
Disease or Syndrome
5.

Holoprosencephaly 5

Holoprosencephaly (HPE) is a structural anomaly of the brain in which there is failed or incomplete separation of the forebrain early in gestation. Classic HPE encompasses a continuum of brain malformations including (in order of decreasing severity): alobar, semilobar, lobar, and middle interhemispheric variant (MIHV) type HPE; a septopreoptic type has also been described. Other CNS abnormalities not specific to HPE may also occur. HPE is accompanied by a spectrum of characteristic craniofacial anomalies in approximately 80% of individuals with HPE. Developmental delay is present in virtually all individuals with the HPE spectrum of CNS anomalies. Seizures and pituitary dysfunction are common. Most affected fetuses do not survive; severely affected children typically do not survive beyond early infancy, while a significant proportion of more mildly affected children survive past 12 months. Mildly manifesting individuals without appreciable brain anomalies on conventional neuroimaging may be described as having “microform” HPE. [from GeneReviews]

MedGen UID:
355304
Concept ID:
C1864827
Disease or Syndrome
6.

Holoprosencephaly 3

Holoprosencephaly (HPE) is a structural anomaly of the brain in which there is failed or incomplete separation of the forebrain early in gestation. Classic HPE encompasses a continuum of brain malformations including (in order of decreasing severity): alobar, semilobar, lobar, and middle interhemispheric variant (MIHV) type HPE; a septopreoptic type has also been described. Other CNS abnormalities not specific to HPE may also occur. HPE is accompanied by a spectrum of characteristic craniofacial anomalies in approximately 80% of individuals with HPE. Developmental delay is present in virtually all individuals with the HPE spectrum of CNS anomalies. Seizures and pituitary dysfunction are common. Most affected fetuses do not survive; severely affected children typically do not survive beyond early infancy, while a significant proportion of more mildly affected children survive past 12 months. Mildly manifesting individuals without appreciable brain anomalies on conventional neuroimaging may be described as having “microform” HPE. [from GeneReviews]

MedGen UID:
327125
Concept ID:
C1840529
Disease or Syndrome
7.

Holoprosencephaly 2

Holoprosencephaly (HPE) is a structural anomaly of the brain in which there is failed or incomplete separation of the forebrain early in gestation. Classic HPE encompasses a continuum of brain malformations including (in order of decreasing severity): alobar, semilobar, lobar, and middle interhemispheric variant (MIHV) type HPE; a septopreoptic type has also been described. Other CNS abnormalities not specific to HPE may also occur. HPE is accompanied by a spectrum of characteristic craniofacial anomalies in approximately 80% of individuals with HPE. Developmental delay is present in virtually all individuals with the HPE spectrum of CNS anomalies. Seizures and pituitary dysfunction are common. Most affected fetuses do not survive; severely affected children typically do not survive beyond early infancy, while a significant proportion of more mildly affected children survive past 12 months. Mildly manifesting individuals without appreciable brain anomalies on conventional neuroimaging may be described as having “microform” HPE. [from GeneReviews]

MedGen UID:
322517
Concept ID:
C1834877
Disease or Syndrome
8.

Cyclops

MedGen UID:
78617
Concept ID:
C0266667
Congenital Abnormality
9.

Microcephalus

A congenital abnormality in which the CEREBRUM is underdeveloped, the fontanels close prematurely, and, as a result, the head is small. (Desk Reference for Neuroscience, 2nd ed.) [from MeSH]

MedGen UID:
44422
Concept ID:
C0025958
Congenital Abnormality
10.

Proboscis

A fleshy, tube-like structure usually located in the midline of the face or just to one side of the midline. [from HPO]

MedGen UID:
786441
Concept ID:
CN188034
Finding
11.

Newborn

MedGen UID:
745693
Concept ID:
C2239178
Finding
12.

Cyclopia

Cyclopia is a congenital abnormality in which there is only one eye. That eye is centrally placed in the area normally occupied by the root of the nose. [from HPO]

MedGen UID:
506337
Concept ID:
CN008752
Finding
13.

Hypotelorism

Interpupillary distance less than 2 SD below the mean (alternatively, the appearance of an decreased interpupillary distance or closely spaced eyes). [from HPO]

MedGen UID:
504517
Concept ID:
CN000563
Finding
14.

Mode of inheritance

The pattern in which a particular genetic trait or disorder is passed from one generation to the next. [from HPO]

MedGen UID:
504300
Concept ID:
CN000006
Finding
15.

Single median maxillary incisor

The presence of a single, median maxillary incisor, affecting both the primary maxillary incisor and the permanent maxillary incisor. [from HPO]

MedGen UID:
446745
Concept ID:
CN005505
Finding
16.

Error occurred: cannot get document summary

ID:
441288

17.

Mild

The second level of severity in an ordered list based on a five-level scale of minimal, mild, moderate, marked, and severe. [from NCI]

MedGen UID:
422477
Concept ID:
C2945599
18.

Nonsyndromic microcephaly

MedGen UID:
419828
Concept ID:
C2931527
Disease or Syndrome
19.

Thyroid hormone plasma membrane transport defect

MedGen UID:
396060
Concept ID:
C1861101
Disease or Syndrome
20.

Phenotypic variability

MedGen UID:
381249
Concept ID:
C1853719
Finding

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