From HPO
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).
Hydronephrosis- MedGen UID:
- 42531
- •Concept ID:
- C0020295
- •
- Disease or Syndrome
Severe distention of the kidney with dilation of the renal pelvis and calices.
Ureteral duplication- MedGen UID:
- 66380
- •Concept ID:
- C0221365
- •
- Congenital Abnormality
A developmental anomaly characterized by the presence of two, instead of one, ureter connecting a kidney to the bladder.
Renal hypoplasia- MedGen UID:
- 120571
- •Concept ID:
- C0266295
- •
- Congenital Abnormality
Hypoplasia of the kidney.
Uterine hypoplasia- MedGen UID:
- 120575
- •Concept ID:
- C0266399
- •
- Congenital Abnormality
Underdevelopment of the uterus.
Hypoplasia of the vagina- MedGen UID:
- 91040
- •Concept ID:
- C0345309
- •
- Congenital Abnormality
Developmental hypoplasia of the vagina.
Hypoplastic labia majora- MedGen UID:
- 107566
- •Concept ID:
- C0566899
- •
- Finding
Undergrowth of the outer labia.
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.
Clitoral hypoplasia- MedGen UID:
- 336198
- •Concept ID:
- C1844527
- •
- Finding
Developmental hypoplasia of the clitoris.
Syndactyly- MedGen UID:
- 52619
- •Concept ID:
- C0039075
- •
- Congenital Abnormality
Webbing or fusion of the fingers or toes, involving soft parts only or including bone structure. Bony fusions are referred to as "bony" syndactyly if the fusion occurs in a radio-ulnar axis. Fusions of bones of the fingers or toes in a proximo-distal axis are referred to as "symphalangism".
Brachydactyly- MedGen UID:
- 67454
- •Concept ID:
- C0221357
- •
- Congenital Abnormality
Digits that appear disproportionately short compared to the hand/foot. The word brachydactyly is used here to describe a series distinct patterns of shortened digits (brachydactyly types A-E). This is the sense used here.
Broad palm- MedGen UID:
- 75535
- •Concept ID:
- C0264142
- •
- Congenital Abnormality
For children from birth to 4 years of age the palm width is more than 2 SD above the mean; for children from 4 to 16 years of age the palm width is above the 95th centile; or, the width of the palm appears disproportionately wide for the length.
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.
Pes cavus- MedGen UID:
- 675590
- •Concept ID:
- C0728829
- •
- Congenital Abnormality
An increase in height of the medial longitudinal arch of the foot that does not flatten on weight bearing (i.e., a distinctly hollow form of the sole of the foot when it is bearing weight).
Short toe- MedGen UID:
- 322858
- •Concept ID:
- C1836195
- •
- Finding
A toe that appears disproportionately short compared to the foot.
Short metacarpal- MedGen UID:
- 323064
- •Concept ID:
- C1837084
- •
- Anatomical Abnormality
Diminished length of one or more metacarpal bones in relation to the others of the same hand or to the contralateral metacarpal.
Short palm- MedGen UID:
- 334684
- •Concept ID:
- C1843108
- •
- Finding
Short palm.
Short foot- MedGen UID:
- 376415
- •Concept ID:
- C1848673
- •
- Finding
A measured foot length that is more than 2 SD below the mean for a newborn of 27 - 41 weeks gestation, or foot that is less than the 3rd centile for individuals from birth to 16 years of age (objective). Alternatively, a foot that appears disproportionately short (subjective).
Short metatarsal- MedGen UID:
- 341358
- •Concept ID:
- C1849020
- •
- Finding
Diminished length of a metatarsal bone, with resultant proximal displacement of the associated toe.
Limited elbow movement- MedGen UID:
- 337930
- •Concept ID:
- C1849955
- •
- Finding
Clinodactyly of the 5th finger- MedGen UID:
- 340456
- •Concept ID:
- C1850049
- •
- Congenital Abnormality
Clinodactyly refers to a bending or curvature of the fifth finger in the radial direction (i.e., towards the 4th finger).
Proximal placement of thumb- MedGen UID:
- 356033
- •Concept ID:
- C1865572
- •
- Finding
Proximal mislocalization of the thumb.
Broad foot- MedGen UID:
- 356187
- •Concept ID:
- C1866241
- •
- Finding
A foot for which the measured width is above the 95th centile for age; or, a foot that appears disproportionately wide for its length.
Rhizomelia- MedGen UID:
- 357122
- •Concept ID:
- C1866730
- •
- Congenital Abnormality
Disproportionate shortening of the proximal segment of limbs (i.e. the femur and humerus).
Patent ductus arteriosus- MedGen UID:
- 4415
- •Concept ID:
- C0013274
- •
- Congenital Abnormality
In utero, the ductus arteriosus (DA) serves to divert ventricular output away from the lungs and toward the placenta by connecting the main pulmonary artery to the descending aorta. A patent ductus arteriosus (PDA) in the first 3 days of life is a physiologic shunt in healthy term and preterm newborn infants, and normally is substantially closed within about 24 hours after bith and completely closed after about three weeks. Failure of physiologcal closure is referred to a persistent or patent ductus arteriosus (PDA). Depending on the degree of left-to-right shunting, PDA can have clinical consequences.
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.
Pulmonic stenosis- MedGen UID:
- 408291
- •Concept ID:
- C1956257
- •
- Disease or Syndrome
A narrowing of the right ventricular outflow tract that can occur at the pulmonary valve (valvular stenosis), below the pulmonary valve (infundibular stenosis), or above the pulmonary valve (supravalvar stenosis).
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.
Disproportionate short-limb short stature- MedGen UID:
- 342370
- •Concept ID:
- C1849937
- •
- Finding
A type of disproportionate short stature characterized by a short limbs but an average-sized trunk.
Birth length less than 3rd percentile- MedGen UID:
- 340924
- •Concept ID:
- C1855650
- •
- Finding
Postnatal growth retardation- MedGen UID:
- 395343
- •Concept ID:
- C1859778
- •
- Finding
Slow or limited growth after birth.
Decreased body weight- MedGen UID:
- 1806755
- •Concept ID:
- C5574742
- •
- Finding
Abnormally low body weight.
Biliary tract abnormality- MedGen UID:
- 108201
- •Concept ID:
- C0549613
- •
- Finding
An abnormality of the biliary tree.
Anteriorly placed anus- MedGen UID:
- 333160
- •Concept ID:
- C1838705
- •
- Finding
Anterior malposition of the anus.
Bilobate gallbladder- MedGen UID:
- 335420
- •Concept ID:
- C1846422
- •
- Congenital Abnormality
The presence of a bilobed gallbladder, related to a duplication of the gallbladder primordium.
Feeding difficulties in infancy- MedGen UID:
- 436211
- •Concept ID:
- C2674608
- •
- Finding
Impaired feeding performance of an infant as manifested by difficulties such as weak and ineffective sucking, brief bursts of sucking, and falling asleep during sucking. There may be difficulties with chewing or maintaining attention.
Low-set ears- MedGen UID:
- 65980
- •Concept ID:
- C0239234
- •
- Congenital Abnormality
Upper insertion of the ear to the scalp below an imaginary horizontal line drawn between the inner canthi of the eye and extending posteriorly to the ear.
Stenosis of the external auditory canal- MedGen UID:
- 140758
- •Concept ID:
- C0395837
- •
- Finding
An abnormal narrowing of the external auditory canal.
Posteriorly rotated ears- MedGen UID:
- 96566
- •Concept ID:
- C0431478
- •
- Congenital Abnormality
A type of abnormal location of the ears in which the position of the ears is characterized by posterior rotation (the superior part of the ears is rotated towards the back of the head, and the inferior part of the ears towards the front).
Hearing impairment- MedGen UID:
- 235586
- •Concept ID:
- C1384666
- •
- Disease or Syndrome
A decreased magnitude of the sensory perception of sound.
Protruding ear- MedGen UID:
- 343309
- •Concept ID:
- C1855285
- •
- Finding
Angle formed by the plane of the ear and the mastoid bone greater than the 97th centile for age (objective); or, outer edge of the helix more than 2 cm from the mastoid at the point of maximum distance (objective).
Microtia, second degree- MedGen UID:
- 892536
- •Concept ID:
- C4020797
- •
- Anatomical Abnormality
Median longitudinal length of the ear more than two standard deviations below the mean in the presence of some, but not all, parts of the normal 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.
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.
Cerebral atrophy- MedGen UID:
- 116012
- •Concept ID:
- C0235946
- •
- Disease or Syndrome
Atrophy (wasting, decrease in size of cells or tissue) affecting the cerebrum.
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.
Intellectual disability, progressive- MedGen UID:
- 337397
- •Concept ID:
- C1846149
- •
- Mental or Behavioral Dysfunction
The term progressive intellectual disability should be used if intelligence decreases/deteriorates over time.
Ventriculomegaly- MedGen UID:
- 480553
- •Concept ID:
- C3278923
- •
- Finding
An increase in size of the ventricular system of the brain.
Craniosynostosis syndrome- MedGen UID:
- 1163
- •Concept ID:
- C0010278
- •
- Disease or Syndrome
Craniosynostosis refers to the premature closure of the cranial sutures. Primary craniosynostosis refers to the closure of one or more sutures due to abnormalities in skull development, and secondary craniosynostosis results from failure of brain growth.
Umbilical hernia- MedGen UID:
- 9232
- •Concept ID:
- C0019322
- •
- Anatomical Abnormality
Protrusion of abdominal contents through a defect in the abdominal wall musculature around the umbilicus. Skin and subcutaneous tissue overlie the defect.
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.
Frontal bossing- MedGen UID:
- 67453
- •Concept ID:
- C0221354
- •
- Congenital Abnormality
Bilateral bulging of the lateral frontal bone prominences with relative sparing of the midline.
Diastasis recti- MedGen UID:
- 113171
- •Concept ID:
- C0221766
- •
- Disease or Syndrome
A separation of the rectus abdominis muscle into right and left halves (which are normally joined at the midline at the linea alba).
Hypoplasia of the maxilla- MedGen UID:
- 66804
- •Concept ID:
- C0240310
- •
- Congenital Abnormality
Abnormally small dimension of the Maxilla. Usually creating a malocclusion or malalignment between the upper and lower teeth or resulting in a deficient amount of projection of the base of the nose and lower midface region.
Hemivertebrae- MedGen UID:
- 82720
- •Concept ID:
- C0265677
- •
- Congenital Abnormality
Absence of one half of the vertebral body.
Joint hypermobility- MedGen UID:
- 336793
- •Concept ID:
- C1844820
- •
- Finding
The capability that a joint (or a group of joints) has to move, passively and/or actively, beyond normal limits along physiological axes.
Square pelvis bone- MedGen UID:
- 337928
- •Concept ID:
- C1849953
- •
- Anatomical Abnormality
An abnormally squared appearance of the bony pelvis, a normally rounded or basin-shaped structure.
Wide anterior fontanel- MedGen UID:
- 400926
- •Concept ID:
- C1866134
- •
- Finding
Enlargement of the anterior fontanelle with respect to age-dependent norms.
Pectus excavatum- MedGen UID:
- 781174
- •Concept ID:
- C2051831
- •
- Finding
A defect of the chest wall characterized by a depression of the sternum, giving the chest ("pectus") a caved-in ("excavatum") appearance.
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.
Abnormal pelvic girdle bone morphology- MedGen UID:
- 866545
- •Concept ID:
- C4020847
- •
- Anatomical Abnormality
An abnormality of the bony pelvic girdle, which is a ring of bones connecting the vertebral column to the femurs.
Microcephaly- MedGen UID:
- 1644158
- •Concept ID:
- C4551563
- •
- Finding
Head circumference below 2 standard deviations below the mean for age and gender.
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.
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.
Round face- MedGen UID:
- 116087
- •Concept ID:
- C0239479
- •
- Finding
The facial appearance is more circular than usual as viewed from the front.
Bilateral cleft lip- MedGen UID:
- 451046
- •Concept ID:
- C0392005
- •
- Congenital Abnormality
A non-midline cleft of the upper lip on the left and right sides.
Upslanted palpebral fissure- MedGen UID:
- 98390
- •Concept ID:
- C0423109
- •
- Finding
The palpebral fissure inclination is more than two standard deviations above the mean for age (objective); or, the inclination of the palpebral fissure is greater than typical for age.
Short lingual frenulum- MedGen UID:
- 604928
- •Concept ID:
- C0426501
- •
- Finding
The presence of an abnormally short lingual frenulum.
Short neck- MedGen UID:
- 99267
- •Concept ID:
- C0521525
- •
- Finding
Diminished length of the neck.
Thin vermilion border- MedGen UID:
- 108294
- •Concept ID:
- C0578038
- •
- Finding
Height of the vermilion of the medial part of the lip more than 2 SD below the mean, or apparently reduced height of the vermilion of the lip in the frontal view. The vermilion is the red part of the lips (and confusingly, the vermilion itself is also often referred to as being equivalent the lips).
Long face- MedGen UID:
- 324419
- •Concept ID:
- C1836047
- •
- Finding
Facial height (length) is more than 2 standard deviations above the mean (objective); or, an apparent increase in the height (length) of the face (subjective).
Prominent forehead- MedGen UID:
- 373291
- •Concept ID:
- C1837260
- •
- Finding
Forward prominence of the entire forehead, due to protrusion of the frontal bone.
Widely spaced teeth- MedGen UID:
- 337093
- •Concept ID:
- C1844813
- •
- Finding
Increased spaces (diastemata) between most of the teeth in the same dental arch.
Agenesis of maxillary lateral incisor- MedGen UID:
- 342374
- •Concept ID:
- C1849950
- •
- Finding
Agenesis of one or more maxillary lateral incisor, comprising the maxillary lateral primary incisor and maxillary lateral secondary incisor.
Exaggerated cupid bow- MedGen UID:
- 376842
- •Concept ID:
- C1850629
- •
- Finding
More pronounced paramedian peaks and median notch of the Cupid's bow.
Broad neck- MedGen UID:
- 344099
- •Concept ID:
- C1853638
- •
- Finding
Increased side-to-side width of the neck.
Conical incisor- MedGen UID:
- 341076
- •Concept ID:
- C1856136
- •
- Finding
An abnormal conical morphology of the incisor tooth.
Long philtrum- MedGen UID:
- 351278
- •Concept ID:
- C1865014
- •
- Finding
Distance between nasal base and midline upper lip vermilion border more than 2 SD above the mean. Alternatively, an apparently increased distance between nasal base and midline upper lip vermilion border.
Thin upper lip vermilion- MedGen UID:
- 355352
- •Concept ID:
- C1865017
- •
- Finding
Height of the vermilion of the upper lip in the midline more than 2 SD below the mean. Alternatively, an apparently reduced height of the vermilion of the upper lip in the frontal view (subjective).
Narrow palpebral fissure- MedGen UID:
- 382506
- •Concept ID:
- C2675021
- •
- Finding
Reduction in the vertical distance between the upper and lower eyelids.
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).
Preauricular pit- MedGen UID:
- 120587
- •Concept ID:
- C0266610
- •
- Congenital Abnormality
Small indentation anterior to the insertion of the ear.
Facial hypertrichosis- MedGen UID:
- 342000
- •Concept ID:
- C1851400
- •
- Finding
Excessive, increased hair growth located in the facial region.
Polyhydramnios- MedGen UID:
- 6936
- •Concept ID:
- C0020224
- •
- Pathologic Function
The presence of excess amniotic fluid in the uterus during pregnancy.
Wide intermamillary distance- MedGen UID:
- 473489
- •Concept ID:
- C1827524
- •
- Finding
A larger than usual distance between the left and right nipple.
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).
Glaucoma- MedGen UID:
- 42224
- •Concept ID:
- C0017601
- •
- Disease or Syndrome
Glaucoma refers loss of retinal ganglion cells in a characteristic pattern of optic neuropathy usually associated with increased intraocular pressure.
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).
Myopia- MedGen UID:
- 44558
- •Concept ID:
- C0027092
- •
- Disease or Syndrome
Nearsightedness, also known as myopia, is an eye condition that causes blurry distance vision. People who are nearsighted have more trouble seeing things that are far away (such as when driving) than things that are close up (such as when reading or using a computer). If it is not treated with corrective lenses or surgery, nearsightedness can lead to squinting, eyestrain, headaches, and significant visual impairment.\n\nNearsightedness usually begins in childhood or adolescence. It tends to worsen with age until adulthood, when it may stop getting worse (stabilize). In some people, nearsightedness improves in later adulthood.\n\nFor normal vision, light passes through the clear cornea at the front of the eye and is focused by the lens onto the surface of the retina, which is the lining of the back of the eye that contains light-sensing cells. People who are nearsighted typically have eyeballs that are too long from front to back. As a result, light entering the eye is focused too far forward, in front of the retina instead of on its surface. It is this change that causes distant objects to appear blurry. The longer the eyeball is, the farther forward light rays will be focused and the more severely nearsighted a person will be.\n\nNearsightedness is measured by how powerful a lens must be to correct it. The standard unit of lens power is called a diopter. Negative (minus) powered lenses are used to correct nearsightedness. The more severe a person's nearsightedness, the larger the number of diopters required for correction. In an individual with nearsightedness, one eye may be more nearsighted than the other.\n\nEye doctors often refer to nearsightedness less than -5 or -6 diopters as "common myopia." Nearsightedness of -6 diopters or more is commonly called "high myopia." This distinction is important because high myopia increases a person's risk of developing other eye problems that can lead to permanent vision loss or blindness. These problems include tearing and detachment of the retina, clouding of the lens (cataract), and an eye disease called glaucoma that is usually related to increased pressure within the eye. The risk of these other eye problems increases with the severity of the nearsightedness. The term "pathological myopia" is used to describe cases in which high myopia leads to tissue damage within the eye.
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.
Cataract- MedGen UID:
- 39462
- •Concept ID:
- C0086543
- •
- Disease or Syndrome
A cataract is an opacity or clouding that develops in the crystalline lens of the eye or in its capsule.
Iris coloboma- MedGen UID:
- 116097
- •Concept ID:
- C0240063
- •
- Anatomical Abnormality
A coloboma of the iris.
Irido-corneo-trabecular dysgenesis- MedGen UID:
- 91031
- •Concept ID:
- C0344559
- •
- Congenital Abnormality
Anterior segment dysgeneses (ASGD or ASMD) are a heterogeneous group of developmental disorders affecting the anterior segment of the eye, including the cornea, iris, lens, trabecular meshwork, and Schlemm canal. The clinical features of ASGD include iris hypoplasia, an enlarged or reduced corneal diameter, corneal vascularization and opacity, posterior embryotoxon, corectopia, polycoria, an abnormal iridocorneal angle, ectopia lentis, and anterior synechiae between the iris and posterior corneal surface (summary by Cheong et al., 2016).
Anterior segment dysgenesis is sometimes divided into subtypes including aniridia (see 106210), Axenfeld and Rieger anomalies, iridogoniodysgenesis, Peters anomaly, and posterior embryotoxon (Gould and John, 2002).
Patients with ASGD5 have been reported with the Peters anomaly, Axenfeld anomaly, and Rieger anomaly subtypes.
Peters anomaly consists of a central corneal leukoma, absence of the posterior corneal stroma and Descemet membrane, and a variable degree of iris and lenticular attachments to the central aspect of the posterior cornea (Peters, 1906). It occurs as an isolated ocular abnormality or in association with other ocular defects.
In Axenfeld anomaly, strands of iris tissue attach to the Schwalbe line; in Rieger anomaly, in addition to the attachment of iris tissue to the Schwalbe line, there is clinically evident iris stromal atrophy with hole or pseudo-hole formation and corectopia (summary by Smith and Traboulsi, 2012).
Retinal coloboma- MedGen UID:
- 761889
- •Concept ID:
- C3540764
- •
- Disease or Syndrome
A notch or cleft of the retina.
- Abnormality of head or neck
- Abnormality of limbs
- Abnormality of prenatal development or birth
- Abnormality of the breast
- Abnormality of the cardiovascular system
- Abnormality of the digestive system
- Abnormality of the eye
- Abnormality of the genitourinary system
- Abnormality of the integument
- Abnormality of the musculoskeletal system
- Abnormality of the nervous system
- Ear malformation
- Growth abnormality