From HPO
Postaxial polydactyly- MedGen UID:
- 67394
- •Concept ID:
- C0220697
- •
- Disease or Syndrome
Polydactyly refers to the occurrence of supernumerary digits and is the most frequent of congenital hand and foot deformities. Based on the location of the extra digits, polydactyly can be classified into preaxial, involving the thumb or great toe; postaxial, affecting the fifth digit; and central, involving the 3 central digits. Postaxial polydactyly (PAP) is further subclassified into 2 types: in type A, a well-formed extra digit articulates with the fifth or a sixth metacarpal, whereas in type B, a rudimentary, poorly developed extra digit is present (summary by Umm-e-Kalsoom et al., 2012).
Genetic Heterogeneity of Postaxial Polydactyly
Other forms of postaxial polydactyly type A include PAPA2 (602085) on chromosome 13q21; PAPA3 (607324) on chromosome 19p13; PAPA4 (608562) on chromosome 7q22; PAPA5 (263450) on chromosome 13q13; PAPA6 (615226), caused by mutation in the ZNF141 gene (194648) on chromosome 4p16; PAPA7 (617642), caused by mutation in the IQCE gene (617631) on chromosome 7p22; PAPA8 (618123), caused by mutation in the GLI1 gene (165220) on chromosome 12q13; PAPA9 (618219), caused by mutation in the FAM98A gene (617273) on chromosome 8q22; and PAPA10 (618498), caused by mutation in the KIAA0825 gene (617266) on chromosome 5q15.
Knee flexion contracture- MedGen UID:
- 98042
- •Concept ID:
- C0409355
- •
- Finding
A type of knee joint contracture in which the knee is in a fixed bent (flexed) configuration such that it cannot be straightened actively or passively.
Atrial septal defect- MedGen UID:
- 6753
- •Concept ID:
- C0018817
- •
- Congenital Abnormality
Atrial septal defect (ASD) is a congenital abnormality of the interatrial septum that enables blood flow between the left and right atria via the interatrial septum.
Ventricular septal defect- MedGen UID:
- 42366
- •Concept ID:
- C0018818
- •
- Congenital Abnormality
A hole between the two bottom chambers (ventricles) of the heart. The defect is centered around the most superior aspect of the ventricular septum.
Mitral regurgitation- MedGen UID:
- 7670
- •Concept ID:
- C0026266
- •
- Disease or Syndrome
An abnormality of the mitral valve characterized by insufficiency or incompetence of the mitral valve resulting in retrograde leaking of blood through the mitral valve upon ventricular contraction.
Vascular ring- MedGen UID:
- 65131
- •Concept ID:
- C0221214
- •
- Congenital Abnormality
A developmental defect of the aortic arch system in which the trachea and esophagus are completely encircled by connected segments of the aortic arch and its branches. This occurs if the normal process of regression and persistence of the bilateral embryonic aortic arches fails.
Overgrowth- MedGen UID:
- 376550
- •Concept ID:
- C1849265
- •
- Finding
Excessive postnatal growth which may comprise increased weight, increased length, and/or increased head circumference.
Hydrocephalus- MedGen UID:
- 9335
- •Concept ID:
- C0020255
- •
- Disease or Syndrome
Hydrocephalus is an active distension of the ventricular system of the brain resulting from inadequate passage of CSF from its point of production within the cerebral ventricles to its point of absorption into the systemic circulation.
Seizure- MedGen UID:
- 20693
- •Concept ID:
- C0036572
- •
- Sign or Symptom
A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.
Megalencephaly- MedGen UID:
- 65141
- •Concept ID:
- C0221355
- •
- Congenital Abnormality
Diffuse enlargement of the entire cerebral hemispheres leading to macrocephaly (with or without overlying cortical dysplasia).
Polymicrogyria- MedGen UID:
- 78605
- •Concept ID:
- C0266464
- •
- Congenital Abnormality
Polymicrogyria is a congenital malformation of the cerebral cortex characterized by abnormal cortical layering (lamination) and an excessive number of small gyri (folds).
Hypoplasia of the corpus callosum- MedGen UID:
- 138005
- •Concept ID:
- C0344482
- •
- Congenital Abnormality
Underdevelopment of the corpus callosum.
Global developmental delay- MedGen UID:
- 107838
- •Concept ID:
- C0557874
- •
- Finding
A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.
Thick corpus callosum- MedGen UID:
- 371993
- •Concept ID:
- C1835194
- •
- Finding
Increased vertical dimension of the corpus callosum. This feature can be visualized by sagittal sections on magnetic resonance tomography imaging of the brain.
Intellectual disability, profound- MedGen UID:
- 892508
- •Concept ID:
- C3161330
- •
- Mental or Behavioral Dysfunction
Profound mental retardation is defined as an intelligence quotient (IQ) below 20.
Ventriculomegaly- MedGen UID:
- 480553
- •Concept ID:
- C3278923
- •
- Finding
An increase in size of the ventricular system of the brain.
Pachygyria- MedGen UID:
- 504794
- •Concept ID:
- CN001193
- •
- Finding
Pachygyria is a malformation of cortical development with abnormally wide gyri with sulci 1,5-3 cm apart and abnormally thick cortex measuring more than 5 mm (radiological definition). See also neuropathological definitions for 2-, 3-, and 4-layered lissencephaly.
Kyphosis- MedGen UID:
- 44042
- •Concept ID:
- C0022821
- •
- Anatomical Abnormality
Exaggerated anterior convexity of the thoracic vertebral column.
Frontal bossing- MedGen UID:
- 67453
- •Concept ID:
- C0221354
- •
- Congenital Abnormality
Bilateral bulging of the lateral frontal bone prominences with relative sparing of the midline.
Muscular atrophy- MedGen UID:
- 892680
- •Concept ID:
- C0541794
- •
- Pathologic Function
The presence of skeletal muscular atrophy (which is also known as amyotrophy).
Axial hypotonia- MedGen UID:
- 342959
- •Concept ID:
- C1853743
- •
- Finding
Muscular hypotonia (abnormally low muscle tone) affecting the musculature of the trunk.
Thoracic scoliosis- MedGen UID:
- 387910
- •Concept ID:
- C1857790
- •
- Anatomical Abnormality
Macrocephaly- MedGen UID:
- 745757
- •Concept ID:
- C2243051
- •
- Finding
Occipitofrontal (head) circumference greater than 97th centile compared to appropriate, age matched, sex-matched normal standards. Alternatively, a apparently increased size of the cranium.
Long palpebral fissure- MedGen UID:
- 340300
- •Concept ID:
- C1849340
- •
- Finding
Distance between medial and lateral canthi is more than two standard deviations above the mean for age (objective); or, apparently increased length of the palpebral fissures.
Ptosis- MedGen UID:
- 2287
- •Concept ID:
- C0005745
- •
- Disease or Syndrome
The upper eyelid margin is positioned 3 mm or more lower than usual and covers the superior portion of the iris (objective); or, the upper lid margin obscures at least part of the pupil (subjective).
Blindness- MedGen UID:
- 99138
- •Concept ID:
- C0456909
- •
- Disease or Syndrome
Blindness is the condition of lacking visual perception defined as a profound reduction in visual perception. On the 6m visual acuity scale, blindness is defined as less than 3/60. On the 20ft visual acuity scale, blindness is defined as less than 20/400. On the decimal visual acuity scale, blindness is defined as less than 0.05. Blindness is typically characterized by a visual field of no greater than 10 degrees in radius around central fixation.
Abnormally large globe- MedGen UID:
- 344595
- •Concept ID:
- C1855852
- •
- Finding
Diffusely large eye (with megalocornea) without glaucoma.
- Abnormality of head or neck
- Abnormality of limbs
- Abnormality of the cardiovascular system
- Abnormality of the eye
- Abnormality of the musculoskeletal system
- Abnormality of the nervous system
- Growth abnormality