From HPO
Hemangioma- MedGen UID:
- 5477
- •Concept ID:
- C0018916
- •
- Neoplastic Process
A hemangioma is a benign tumor characterized by blood-filled spaces lined by benign endothelial cells. A hemangioma characterized by large endothelial spaces (caverns) is called a cavernous hemangioma (in contrast to a hemangioma with small endothelial spaces, which is called capillary hemangioma).
Cryptorchidism- MedGen UID:
- 8192
- •Concept ID:
- C0010417
- •
- Congenital Abnormality
Cryptorchidism, or failure of testicular descent, is a common human congenital abnormality with a multifactorial etiology that likely reflects the involvement of endocrine, environmental, and hereditary factors. Cryptorchidism can result in infertility and increases risk for testicular tumors. Testicular descent from abdomen to scrotum occurs in 2 distinct phases: the transabdominal phase and the inguinoscrotal phase (summary by Gorlov et al., 2002).
Abnormality of the genitourinary system- MedGen UID:
- 52948
- •Concept ID:
- C0042063
- •
- Congenital Abnormality
The presence of any abnormality of the genitourinary system.
Aplasia of the uterus- MedGen UID:
- 98421
- •Concept ID:
- C0425913
- •
- Finding
Aplasia of the uterus.
Hypospadias- MedGen UID:
- 163083
- •Concept ID:
- C0848558
- •
- Congenital Abnormality
Abnormal position of urethral meatus on the ventral penile shaft (underside) characterized by displacement of the urethral meatus from the tip of the glans penis to the ventral surface of the penis, scrotum, or perineum.
Clubfoot- MedGen UID:
- 3130
- •Concept ID:
- C0009081
- •
- Congenital Abnormality
Clubfoot is a congenital limb deformity defined as fixation of the foot in cavus, adductus, varus, and equinus (i.e., inclined inwards, axially rotated outwards, and pointing downwards) with concomitant soft tissue abnormalities (Cardy et al., 2007). Clubfoot may occur in isolation or as part of a syndrome (e.g., diastrophic dysplasia, 222600). Clubfoot has been reported with deficiency of long bones and mirror-image polydactyly (Gurnett et al., 2008; Klopocki et al., 2012).
Single transverse palmar crease- MedGen UID:
- 96108
- •Concept ID:
- C0424731
- •
- Finding
The distal and proximal transverse palmar creases are merged into a single transverse palmar crease.
Short thumb- MedGen UID:
- 98469
- •Concept ID:
- C0431890
- •
- Congenital Abnormality
Hypoplasia (congenital reduction in size) of the thumb.
Preaxial hand polydactyly- MedGen UID:
- 237235
- •Concept ID:
- C1395852
- •
- Congenital Abnormality
Supernumerary digits located at the radial side of the hand. Polydactyly (supernumerary digits) involving the thumb occurs in many distinct forms of high variability and severity. Ranging from fleshy nubbins over varying degrees of partial duplication/splitting to completely duplicated or even triplicated thumbs or preaxial (on the radial side of the hand) supernumerary digits.
Short hallux- MedGen UID:
- 400890
- •Concept ID:
- C1865992
- •
- Finding
Underdevelopment (hypoplasia) of the big toe.
Preaxial foot polydactyly- MedGen UID:
- 389171
- •Concept ID:
- C2112942
- •
- Finding
Duplication of all or part of the first ray.
Split hand- MedGen UID:
- 397570
- •Concept ID:
- C2699510
- •
- Congenital Abnormality
A condition in which middle parts of the hand (fingers and metacarpals) are missing giving a cleft appearance. The severity is very variable ranging from slightly hypoplastic middle fingers over absent middle fingers as far as oligo- or monodactyl hands.
Metatarsus adductus- MedGen UID:
- 898667
- •Concept ID:
- C4082169
- •
- Anatomical Abnormality
The metatarsals are deviated medially (tibially), that is, the bones in the front half of the foot bend or turn in toward the body.
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.
Abnormal cardiovascular system morphology- MedGen UID:
- 892473
- •Concept ID:
- C4049796
- •
- Anatomical Abnormality
Any structural anomaly of the heart and blood vessels.
Fetal growth restriction- MedGen UID:
- 4693
- •Concept ID:
- C0015934
- •
- Pathologic Function
An abnormal restriction of fetal growth with fetal weight below the tenth percentile for gestational age.
Small for gestational age- MedGen UID:
- 65920
- •Concept ID:
- C0235991
- •
- Finding
Smaller than normal size according to sex and gestational age related norms, defined as a weight below the 10th percentile for the gestational age.
Short stature- MedGen UID:
- 87607
- •Concept ID:
- C0349588
- •
- Finding
A height below that which is expected according to age and gender norms. Although there is no universally accepted definition of short stature, many refer to "short stature" as height more than 2 standard deviations below the mean for age and gender (or below the 3rd percentile for age and gender dependent norms).
Growth delay- MedGen UID:
- 99124
- •Concept ID:
- C0456070
- •
- Pathologic Function
A deficiency or slowing down of growth pre- and postnatally.
Severe postnatal growth retardation- MedGen UID:
- 347510
- •Concept ID:
- C1857641
- •
- Finding
Severely slow or limited growth after birth, being four standard deviations or more below age- and sex-related norms.
Failure to thrive- MedGen UID:
- 746019
- •Concept ID:
- C2315100
- •
- Disease or Syndrome
Failure to thrive (FTT) refers to a child whose physical growth is substantially below the norm.
Biliary tract abnormality- MedGen UID:
- 108201
- •Concept ID:
- C0549613
- •
- Finding
An abnormality of the biliary tree.
Malrotation of small bowel- MedGen UID:
- 395442
- •Concept ID:
- C1860244
- •
- Congenital Abnormality
A deviation from the normal rotation of the midgut during embryologic development with mislocalization of the small bowel.
Gastroesophageal reflux- MedGen UID:
- 1368658
- •Concept ID:
- C4317146
- •
- Finding
A condition in which the stomach contents leak backwards from the stomach into the esophagus through the lower esophageal sphincter.
Conductive hearing impairment- MedGen UID:
- 9163
- •Concept ID:
- C0018777
- •
- Disease or Syndrome
An abnormality of vibrational conductance of sound to the inner ear leading to impairment of sensory perception of sound.
Sensorineural hearing loss disorder- MedGen UID:
- 9164
- •Concept ID:
- C0018784
- •
- Disease or Syndrome
A type of hearing impairment in one or both ears related to an abnormal functionality of the cochlear nerve.
Stenosis of the external auditory canal- MedGen UID:
- 140758
- •Concept ID:
- C0395837
- •
- Finding
An abnormal narrowing of the external auditory canal.
Abnormal pinna morphology- MedGen UID:
- 167800
- •Concept ID:
- C0857379
- •
- Congenital Abnormality
An abnormality of the pinna, which is also referred to as the auricle or external ear.
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.
Intellectual disability, severe- MedGen UID:
- 48638
- •Concept ID:
- C0036857
- •
- Mental or Behavioral Dysfunction
Severe mental retardation is defined as an intelligence quotient (IQ) in the range of 20-34.
Motor stereotypies- MedGen UID:
- 21318
- •Concept ID:
- C0038271
- •
- Individual Behavior
Use of the same abnormal action in response to certain triggers or at random. They may be used as a way to regulate one's internal state but must otherwise have no apparent functional purpose.
Tethered cord- MedGen UID:
- 36387
- •Concept ID:
- C0080218
- •
- Disease or Syndrome
During normal embryological development, the spinal cord first occupies the entire length of the vertebral column but goes on to assume a position at the level of L1 due to differential growth of the conus medullaris and the vertebral column. The filum terminale is a slender, threadlike structure that remains after the normal regression of the distal embryonic spinal cord and attaches the spinal cord to the coccyx. A tethered cord results if there is a thickened rope-like filum terminale which anchors the cord at the level of L2 or below, potentially causing neurologic signs owing to abnormal tension on the spinal cord.
EEG abnormality- MedGen UID:
- 56235
- •Concept ID:
- C0151611
- •
- Finding
Abnormality observed by electroencephalogram (EEG), which is used to record of the brain's spontaneous electrical activity from multiple electrodes placed on the scalp.
Corpus callosum, agenesis of- MedGen UID:
- 104498
- •Concept ID:
- C0175754
- •
- Congenital Abnormality
The corpus callosum is the largest fiber tract in the central nervous system and the major interhemispheric fiber bundle in the brain. Formation of the corpus callosum begins as early as 6 weeks' gestation, with the first fibers crossing the midline at 11 to 12 weeks' gestation, and completion of the basic shape by age 18 to 20 weeks (Schell-Apacik et al., 2008). Agenesis of the corpus callosum (ACC) is one of the most frequent malformations in brain with a reported incidence ranging between 0.5 and 70 in 10,000 births. ACC is a clinically and genetically heterogeneous condition, which can be observed either as an isolated condition or as a manifestation in the context of a congenital syndrome (see MOLECULAR GENETICS and Dobyns, 1996). Also see mirror movements-1 and/or agenesis of the corpus callosum (MRMV1; 157600).
Schell-Apacik et al. (2008) noted that there is confusion in the literature regarding radiologic terminology concerning partial absence of the corpus callosum, where various designations have been used, including hypogenesis, hypoplasia, partial agenesis, or dysgenesis.
Absent septum pellucidum- MedGen UID:
- 96561
- •Concept ID:
- C0431371
- •
- Congenital Abnormality
Absence of the septum pellucidum (meaning translucent wall in Latin - SP), also known as the ventricle of Sylvius. The septum pellucidum is a thin, triangular double membrane separating the frontal horns of the right and left lateral ventricles of the brain. It extends between the anterior portion of the corpus callosum, and the body of the fornix and its width varies from 1.5 to 3.0 mm.
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.
Periventricular cysts- MedGen UID:
- 326980
- •Concept ID:
- C1839858
- •
- Finding
Cavum septum pellucidum- MedGen UID:
- 327087
- •Concept ID:
- C1840380
- •
- Finding
If the two laminae of the septum pellucidum are not fused then a fluid-filled space or cavum is present. The cavum septum pellucidum is present at birth but usually obliterates by the age of 3 to 6 months. It is up to 1cm in width and the walls are parallel. It is an enclosed space and is not part of the ventricular system or connected with the subarachnoid space.
Ventriculomegaly- MedGen UID:
- 480553
- •Concept ID:
- C3278923
- •
- Finding
An increase in size of the ventricular system of the brain.
Morphological central nervous system abnormality- MedGen UID:
- 892343
- •Concept ID:
- C4021765
- •
- Anatomical Abnormality
A structural abnormality of the central nervous system.
Hip dislocation- MedGen UID:
- 42455
- •Concept ID:
- C0019554
- •
- Injury or Poisoning
Displacement of the femur from its normal location in the hip joint.
Kyphosis- MedGen UID:
- 44042
- •Concept ID:
- C0022821
- •
- Anatomical Abnormality
Exaggerated anterior convexity of the thoracic vertebral column.
Micrognathia- MedGen UID:
- 44428
- •Concept ID:
- C0025990
- •
- Congenital Abnormality
Developmental hypoplasia of the mandible.
Scoliosis- MedGen UID:
- 11348
- •Concept ID:
- C0036439
- •
- Disease or Syndrome
The presence of an abnormal lateral curvature of the spine.
Radioulnar synostosis- MedGen UID:
- 57861
- •Concept ID:
- C0158761
- •
- Congenital Abnormality
An abnormal osseous union (fusion) between the radius and the ulna.
Rib fusion- MedGen UID:
- 78570
- •Concept ID:
- C0265695
- •
- Congenital Abnormality
Complete or partial merging of adjacent ribs.
Delayed skeletal maturation- MedGen UID:
- 108148
- •Concept ID:
- C0541764
- •
- Finding
A decreased rate of skeletal maturation. Delayed skeletal maturation can be diagnosed on the basis of an estimation of the bone age from radiographs of specific bones in the human body.
Decreased muscle mass- MedGen UID:
- 373256
- •Concept ID:
- C1837108
- •
- Finding
Abnormal form of the vertebral bodies- MedGen UID:
- 374194
- •Concept ID:
- C1839326
- •
- Finding
Abnormal morphology of vertebral body.
Generalized hypotonia- MedGen UID:
- 346841
- •Concept ID:
- C1858120
- •
- Finding
Generalized muscular hypotonia (abnormally low muscle tone).
Abnormal sternal ossification- MedGen UID:
- 348058
- •Concept ID:
- C1860243
- •
- Finding
Any anomaly in the formation of the bony substance of the sternum.
Rib segmentation abnormalities- MedGen UID:
- 369388
- •Concept ID:
- C1968999
- •
- Finding
Vertebral fusion- MedGen UID:
- 480139
- •Concept ID:
- C3278509
- •
- Anatomical Abnormality
A developmental defect leading to the union of two adjacent vertebrae.
Craniofacial asymmetry- MedGen UID:
- 870860
- •Concept ID:
- C4025320
- •
- Anatomical Abnormality
Asymmetry of the bones of the skull and the face.
Microcephaly- MedGen UID:
- 1644158
- •Concept ID:
- C4551563
- •
- Finding
Head circumference below 2 standard deviations below the mean for age and gender.
Developmental dysplasia of the hip- MedGen UID:
- 1640560
- •Concept ID:
- C4551649
- •
- Congenital Abnormality
Congenital dysplasia of the hip (CDH) is an abnormality of the seating of the femoral head in the acetabulum. Its severity ranges from mild instability of the femoral head with slight capsular laxity, through moderate lateral displacement of the femoral head, without loss of contact of the head with the acetabulum, up to complete dislocation of the femoral head from the acetabulum. It is one of the most common skeletal congenital anomalies (summary by Sollazzo et al., 2000).
Acetabular dysplasia is an idiopathic, localized developmental dysplasia of the hip that is characterized by a shallow hip socket and decreased coverage of the femoral head. Its radiologic criteria include the center-edge angle of Wiberg, the Sharp angle, and the acetabular roof obliquity. Most patients with acetabular dysplasia develop osteoarthritis (165720) after midlife, and even mild acetabular dysplasia can cause hip osteoarthritis (summary by Mabuchi et al., 2006).
CDH occurs as an isolated anomaly or with more general disorders represented by several syndromes and with chromosomal abnormalities such as trisomy 18 (Wynne-Davies, 1970).
Genetic Heterogeneity of Developmental Dysplasia of the Hip
Developmental dysplasia of the hip-1 (DDH1) maps to chromosome 13q22; DDH2 (615612) maps to chromosome 3p21.
DDH3 (620690) is caused by mutation in the LRP1 gene (107770) on chromosome 12q13.
Immunodeficiency- MedGen UID:
- 7034
- •Concept ID:
- C0021051
- •
- Disease or Syndrome
Failure of the immune system to protect the body adequately from infection, due to the absence or insufficiency of some component process or substance.
Accessory spleen- MedGen UID:
- 75619
- •Concept ID:
- C0266631
- •
- Congenital Abnormality
An accessory spleen is a round, iso-echogenic, homogenic and smooth structure and is seen as a normal variant mostly on the medial contour of the spleen, near the hilus or around the lower pole. This has no pathogenic relevance.
Cleft upper lip- MedGen UID:
- 40327
- •Concept ID:
- C0008924
- •
- Congenital Abnormality
A gap or groove in the upper lip. This is a congenital defect resulting from nonfusion of tissues of the lip during embryonal development.
Partial congenital absence of teeth- MedGen UID:
- 43794
- •Concept ID:
- C0020608
- •
- Congenital Abnormality
Tooth agenesis in some form is a common human anomaly that affects approximately 20% of the population. Although tooth agenesis is associated with numerous syndromes, several case reports describe nonsyndromic forms that are either sporadic or familial in nature, as reviewed by Gorlin et al. (1990). The incidence of familial tooth agenesis varies with each class of teeth. Most commonly affected are third molars (wisdom teeth), followed by either upper lateral incisors or lower second premolars; agenesis involving first and second molars is very rare. Also see 114600 and 302400.
Selective tooth agenesis without associated systemic disorders has sometimes been divided into 2 types: oligodontia, defined as agenesis of 6 or more permanent teeth, and hypodontia, defined as agenesis of less than 6 teeth. The number in both cases does not include absence of third molars (wisdom teeth). Faulty use of the terms, however, have confounded their use. The term 'partial anodontia' is obsolete (Salinas, 1978).
Genetic Heterogeneity of Selective Tooth Agenesis
Other forms of selective tooth agenesis include STHAG2 (602639), mapped to chromosome 16q12; STHAG3 (604625), caused by mutation in the PAX9 gene (167416) on chromosome 14q12; STHAG4 (150400), caused by mutation in the WNT10A gene (606268) on chromosome 2q35; STHAG5 (610926), mapped to chromosome 10q11; STHAG7 (616724), caused by mutation in the LRP6 gene (603507) on chromosome 12p13; STHAG8 (617073), caused by mutation in the WNT10B gene (601906) on chromosome 12q13; STHAG9 (617275), caused by mutation in the GREM2 gene (608832) on chromosome 1q43; STHAG10 (620173), caused by mutation in the TSPEAR gene (612920) on chromosome 21q22; and STHAGX1 (313500), caused by mutation in the EDA gene (300451) on chromosome Xq13.
A type of selective tooth agenesis that was formerly designated STHAG6 has been incorporated into the dental anomalies and short stature syndrome (DASS; 601216).
Of 34 unrelated patients with nonsyndromic tooth agenesis, van den Boogaard et al. (2012) found that 56% (19 patients) had mutations in the WNT10A gene (STHAG4), whereas only 3% and 9% had mutations in the MSX1 (STHAG1) and PAX9 (STHAG3) genes, respectively. The authors concluded that WNT10A is a major gene in the etiology of isolated hypodontia.
Genotype-Phenotype Correlations
Yu et al. (2016) observed that the most frequently missing permanent teeth in WNT10B-associated oligodontia were the lateral incisors (83.3%), whereas premolars were missing only 51.4% of the time, which they noted was a pattern 'clearly different' from the oligodontia patterns resulting from WNT10A mutations. They also stated that the selective pattern in WNT10B mutants was different from that associated with mutations in other genes, such as MSX1, in which second premolars are missing, and PAX9, in which there is agenesis of molars.
Webbed neck- MedGen UID:
- 113154
- •Concept ID:
- C0221217
- •
- Congenital Abnormality
Pterygium colli is a congenital skin fold that runs along the sides of the neck down to the shoulders. It involves an ectopic fibrotic facial band superficial to the trapezius muscle. Excess hair-bearing skin is also present and extends down the cervical region well beyond the normal hairline.
High forehead- MedGen UID:
- 65991
- •Concept ID:
- C0239676
- •
- Finding
An abnormally increased height of the forehead.
Convex nasal ridge- MedGen UID:
- 66809
- •Concept ID:
- C0240538
- •
- Finding
Nasal ridge curving anteriorly to an imaginary line that connects the nasal root and tip. The nose appears often also prominent, and the columella low.
Epicanthus- MedGen UID:
- 151862
- •Concept ID:
- C0678230
- •
- Congenital Abnormality
Epicanthus is a condition in which a fold of skin stretches from the upper to the lower eyelid, partially covering the inner canthus. Usher (1935) noted that epicanthus is a normal finding in the fetus of all races. Epicanthus also occurs in association with hereditary ptosis (110100).
Short upper lip- MedGen UID:
- 338587
- •Concept ID:
- C1848977
- •
- Finding
Decreased width of the upper lip.
Wide nasal bridge- MedGen UID:
- 341441
- •Concept ID:
- C1849367
- •
- Finding
Increased breadth of the nasal bridge (and with it, the nasal root).
Low posterior hairline- MedGen UID:
- 383755
- •Concept ID:
- C1855728
- •
- Finding
Hair on the neck extends more inferiorly than usual.
Prominent glabella- MedGen UID:
- 349761
- •Concept ID:
- C1860247
- •
- Finding
Forward protrusion of the glabella.
Short philtrum- MedGen UID:
- 350006
- •Concept ID:
- C1861324
- •
- Finding
Distance between nasal base and midline upper lip vermilion border more than 2 SD below the mean. Alternatively, an apparently decreased distance between nasal base and midline upper lip vermilion border.
Downturned corners of mouth- MedGen UID:
- 356471
- •Concept ID:
- C1866195
- •
- Anatomical Abnormality
A morphological abnormality of the mouth in which the angle of the mouth is downturned. The oral commissures are positioned inferior to the midline labial fissure.
Highly arched eyebrow- MedGen UID:
- 358357
- •Concept ID:
- C1868571
- •
- Finding
Increased height of the central portion of the eyebrow, forming a crescent, semicircular, or inverted U shape.
Cleft palate- MedGen UID:
- 756015
- •Concept ID:
- C2981150
- •
- Congenital Abnormality
Cleft palate is a developmental defect of the palate resulting from a failure of fusion of the palatine processes and manifesting as a separation of the roof of the mouth (soft and hard palate).
Orofacial cleft- MedGen UID:
- 472000
- •Concept ID:
- C3266076
- •
- Congenital Abnormality
The presence of a cleft (gap, opening, or groove) in the oral cavity, including cleft of the upper lip and/or cleft of the palate. Cleft of the upper lip is visible as a groove or fissure in the lip, most frequently due to a congenital failure of the maxillary and median nasal processes to fuse. Cleft palate is characterized by a grooved depression or fissure in the roof of the mouth, most often resulting from a congenital failure of the palate to fuse properly. Clefts of the lip and palate can occur individually or together. It is preferable to code each defect separately.
Preauricular pit- MedGen UID:
- 120587
- •Concept ID:
- C0266610
- •
- Congenital Abnormality
Small indentation anterior to the insertion of the ear.
Sacral dimple- MedGen UID:
- 98428
- •Concept ID:
- C0426848
- •
- Finding
A cutaneous indentation resulting from tethering of the skin to underlying structures (bone) of the intergluteal cleft.
Hyperconvex fingernails- MedGen UID:
- 337095
- •Concept ID:
- C1844825
- •
- Finding
When viewed on end (with the finger tip pointing toward the examiner's eye) the curve of the fingernail forms a tighter curve of convexity.
Aplasia cutis congenita of scalp- MedGen UID:
- 343411
- •Concept ID:
- C1855698
- •
- Congenital Abnormality
A developmental defect resulting in the congenital absence of skin on the scalp.
Preauricular skin tag- MedGen UID:
- 395989
- •Concept ID:
- C1860816
- •
- Finding
A rudimentary tag of skin often containing ear tissue including a core of cartilage and located just anterior to the auricle (outer part of the ear).
Decreased fetal movement- MedGen UID:
- 68618
- •Concept ID:
- C0235659
- •
- Finding
An abnormal reduction in quantity or strength of fetal movements.
Precocious puberty- MedGen UID:
- 18752
- •Concept ID:
- C0034013
- •
- Disease or Syndrome
The onset of secondary sexual characteristics before a normal age. Although it is difficult to define normal age ranges because of the marked variation with which puberty begins in normal children, precocious puberty can be defined as the onset of puberty before the age of 8 years in girls or 9 years in boys.
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).
Proptosis- MedGen UID:
- 41917
- •Concept ID:
- C0015300
- •
- Disease or Syndrome
An eye that is protruding anterior to the plane of the face to a greater extent than is typical.
Hypertelorism- MedGen UID:
- 9373
- •Concept ID:
- C0020534
- •
- Finding
Although hypertelorism means an excessive distance between any paired organs (e.g., the nipples), the use of the word has come to be confined to ocular hypertelorism. Hypertelorism occurs as an isolated feature and is also a feature of many syndromes, e.g., Opitz G syndrome (see 300000), Greig cephalopolysyndactyly (175700), and Noonan syndrome (163950) (summary by Cohen et al., 1995).
Nystagmus- MedGen UID:
- 45166
- •Concept ID:
- C0028738
- •
- Disease or Syndrome
Rhythmic, involuntary oscillations of one or both eyes related to abnormality in fixation, conjugate gaze, or vestibular mechanisms.
Strabismus- MedGen UID:
- 21337
- •Concept ID:
- C0038379
- •
- Disease or Syndrome
A misalignment of the eyes so that the visual axes deviate from bifoveal fixation. The classification of strabismus may be based on a number of features including the relative position of the eyes, whether the deviation is latent or manifest, intermittent or constant, concomitant or otherwise and according to the age of onset and the relevance of any associated refractive error.
Iris coloboma- MedGen UID:
- 116097
- •Concept ID:
- C0240063
- •
- Anatomical Abnormality
A coloboma of the iris.
Rieger anomaly- MedGen UID:
- 78558
- •Concept ID:
- C0265341
- •
- Disease or Syndrome
Axenfeld-Rieger syndrome is primarily an eye disorder, although it can also affect other parts of the body. This condition is characterized by abnormalities of the front part of the eye, an area known as the anterior segment. For example, the colored part of the eye (the iris), may be thin or poorly developed. The iris normally has a single central hole, called the pupil, through which light enters the eye. People with Axenfeld-Rieger syndrome often have a pupil that is off-center (corectopia) or extra holes in the iris that can look like multiple pupils (polycoria). This condition can also cause abnormalities of the cornea, which is the clear front covering of the eye.\n\nAbout half of affected individuals develop glaucoma, a serious condition that increases pressure inside the eye. When glaucoma occurs with Axenfeld-Rieger syndrome, it most often develops in late childhood or adolescence, although it can occur as early as infancy. Glaucoma can cause vision loss or blindness.\n\nThe signs and symptoms of Axenfeld-Rieger syndrome can also affect other parts of the body. Many affected individuals have distinctive facial features such as widely spaced eyes (hypertelorism); a flattened mid-face with a broad, flat nasal bridge; and a prominent forehead. The condition is also associated with dental abnormalities including unusually small teeth (microdontia) or fewer than normal teeth (oligodontia). Some people with Axenfeld-Rieger syndrome have extra folds of skin around their belly button (redundant periumbilical skin). Other, less common features can include heart defects, the opening of the urethra on the underside of the penis (hypospadias), narrowing of the anus (anal stenosis), and abnormalities of the pituitary gland that can result in slow growth.\n\nResearchers have described at least three types of Axenfeld-Rieger syndrome. The types, which are numbered 1 through 3, are distinguished by their genetic cause.
Congenital ectopic pupil- MedGen UID:
- 224790
- •Concept ID:
- C1271219
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- Congenital Abnormality
Ectopia pupillae is a congenital eye malformation in which the pupils are displaced from their normal central position.
- Abnormality of head or neck
- Abnormality of limbs
- Abnormality of prenatal development or birth
- Abnormality of the cardiovascular system
- Abnormality of the digestive system
- Abnormality of the endocrine system
- Abnormality of the eye
- Abnormality of the genitourinary system
- Abnormality of the immune system
- Abnormality of the integument
- Abnormality of the musculoskeletal system
- Abnormality of the nervous system
- Ear malformation
- Growth abnormality
- Neoplasm