From HPO
Hydronephrosis- MedGen UID:
- 42531
- •Concept ID:
- C0020295
- •
- Disease or Syndrome
Severe distention of the kidney with dilation of the renal pelvis and calices.
Vesicoureteral reflux- MedGen UID:
- 21852
- •Concept ID:
- C0042580
- •
- Disease or Syndrome
Vesicoureteral reflux (VUR) is characterized by the reflux of urine from the bladder into the ureters and sometimes into the kidneys. It is a risk factor for urinary tract infections. Primary VUR results from a developmental defect of the ureterovesical junction (UVJ). In combination with intrarenal reflux, the resulting inflammatory reaction may result in renal injury or scarring, also called reflux nephropathy (RN). Extensive renal scarring impairs renal function and may predispose patients to hypertension, proteinuria, and renal insufficiency (summary by Lu et al., 2007).
Genetic Heterogeneity of Vesicoureteral Reflux
A locus designated VUR1 maps to chromosome 1p13. VUR2 (610878) is caused by mutation in the ROBO2 gene (602431) on chromosome 3p12; VUR3 (613674) is caused by mutation in the SOX17 gene (610928) on chromosome 8q11; VUR4 (614317) maps to chromosome 5; VUR5 (614318) maps to chromosome 13; VUR6 (614319) maps to chromosome 18; VUR7 (615390) maps to chromosome 12; and VUR8 (615963) is caused by mutation in the TNXB gene (600985) on chromosome 6p21. A possible X-linked form has been reported (VURX; 314550).
Horseshoe kidney- MedGen UID:
- 65140
- •Concept ID:
- C0221353
- •
- Congenital Abnormality
A connection of the right and left kidney by an isthmus of functioning renal parenchyma or fibrous tissue that crosses the midline.
Renal malrotation- MedGen UID:
- 68662
- •Concept ID:
- C0238210
- •
- Congenital Abnormality
An abnormality of the normal developmental rotation of the kidney leading to an abnormal orientation of the kidney.
Renal hypoplasia- MedGen UID:
- 120571
- •Concept ID:
- C0266295
- •
- Congenital Abnormality
Hypoplasia of the kidney.
Renal agenesis- MedGen UID:
- 154237
- •Concept ID:
- C0542519
- •
- Congenital Abnormality
Agenesis, that is, failure of the kidney to develop during embryogenesis and development.
Crossed fused renal ectopia- MedGen UID:
- 372130
- •Concept ID:
- C1835796
- •
- Congenital Abnormality
A developmental anomaly in which the kidneys are fused and localized on the same side of the midline. This anomaly is thought to result from disruption of the normal embryologic migration of the kidneys.
Pes planus- MedGen UID:
- 42034
- •Concept ID:
- C0016202
- •
- Anatomical Abnormality
A foot where the longitudinal arch of the foot is in contact with the ground or floor when the individual is standing; or, in a patient lying supine, a foot where the arch is in contact with the surface of a flat board pressed against the sole of the foot by the examiner with a pressure similar to that expected from weight bearing; or, the height of the arch is reduced.
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".
Triphalangeal thumb- MedGen UID:
- 66029
- •Concept ID:
- C0241397
- •
- Congenital Abnormality
A thumb with three phalanges in a single, proximo-distal axis. Thus, this term applies if the thumb has an accessory phalanx, leading to a digit like appearance of the thumb.
Preaxial polydactyly- MedGen UID:
- 87498
- •Concept ID:
- C0345354
- •
- Congenital Abnormality
A form of polydactyly in which the extra digit or digits are localized on the side of the thumb or great toe.
Short thumb- MedGen UID:
- 98469
- •Concept ID:
- C0431890
- •
- Congenital Abnormality
Hypoplasia (congenital reduction in size) of the thumb.
Radial deviation of the hand- MedGen UID:
- 108280
- •Concept ID:
- C0575803
- •
- Finding
An abnormal position of the hand in which the wrist is bent toward the radius (i.e., toward the thumb).
Hypoplasia of the radius- MedGen UID:
- 672334
- •Concept ID:
- C0685381
- •
- Congenital Abnormality
Underdevelopment of the radius.
Absent radius- MedGen UID:
- 235613
- •Concept ID:
- C1405984
- •
- Congenital Abnormality
Missing radius bone associated with congenital failure of development.
Short humerus- MedGen UID:
- 316907
- •Concept ID:
- C1832117
- •
- Congenital Abnormality
Underdevelopment of the humerus.
Sandal gap- MedGen UID:
- 374376
- •Concept ID:
- C1840069
- •
- Finding
A widely spaced gap between the first toe (the great toe) and the second toe.
Aplasia of metacarpal bones- MedGen UID:
- 335431
- •Concept ID:
- C1846473
- •
- Finding
Developmental defect associated with absence of one or more metacarpal bones.
Small thenar eminence- MedGen UID:
- 335432
- •Concept ID:
- C1846474
- •
- Finding
Underdevelopment of the thenar eminence with reduced palmar soft tissue mass surrounding the base of the thumb.
Hypoplasia of the ulna- MedGen UID:
- 395934
- •Concept ID:
- C1860614
- •
- Congenital Abnormality
Underdevelopment of the ulna.
Absent thumb- MedGen UID:
- 480441
- •Concept ID:
- C3278811
- •
- Finding
Absent thumb, i.e., the absence of both phalanges of a thumb and the associated soft tissues.
Vascular dilatation- MedGen UID:
- 8076
- •Concept ID:
- C0002940
- •
- Pathologic Function
Abnormal outpouching or sac-like dilatation in the wall of an atery, vein or the heart.
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.
Imperforate anus- MedGen UID:
- 1997
- •Concept ID:
- C0003466
- •
- Congenital Abnormality
Congenital absence of the anus, i.e., the opening at the bottom end of the intestinal tract.
Aganglionic megacolon- MedGen UID:
- 5559
- •Concept ID:
- C0019569
- •
- Disease or Syndrome
The disorder described by Hirschsprung (1888) and known as Hirschsprung disease or aganglionic megacolon is characterized by congenital absence of intrinsic ganglion cells in the myenteric (Auerbach) and submucosal (Meissner) plexuses of the gastrointestinal tract. Patients are diagnosed with the short-segment form (S-HSCR, approximately 80% of cases) when the aganglionic segment does not extend beyond the upper sigmoid, and with the long-segment form (L-HSCR) when aganglionosis extends proximal to the sigmoid (Amiel et al., 2008). Total colonic aganglionosis and total intestinal HSCR also occur.
Genetic Heterogeneity of Hirschsprung Disease
Several additional loci for isolated Hirschsprung disease have been mapped. HSCR2 (600155) is associated with variation in the EDNRB gene (131244) on 13q22; HSCR3 (613711) is associated with variation in the GDNF gene (600837) on 5p13; HSCR4 (613712) is associated with variation in the EDN3 gene (131242) on 20q13; HSCR5 (600156) maps to 9q31; HSCR6 (606874) maps to 3p21; HSCR7 (606875) maps to 19q12; HSCR8 (608462) maps to 16q23; and HSCR9 (611644) maps to 4q31-q32.
HSCR also occurs as a feature of several syndromes including the Waardenburg-Shah syndrome (277580), Mowat-Wilson syndrome (235730), Goldberg-Shprintzen syndrome (609460), and congenital central hypoventilation syndrome (CCHS; 209880).
Whereas mendelian modes of inheritance have been described for syndromic HSCR, isolated HSCR stands as a model for genetic disorders with complex patterns of inheritance. Isolated HSCR appears to be of complex nonmendelian inheritance with low sex-dependent penetrance and variable expression according to the length of the aganglionic segment, suggestive of the involvement of one or more genes with low penetrance. The development of surgical procedures decreased mortality and morbidity, which allowed the emergence of familial cases. HSCR occurs as an isolated trait in 70% of patients, is associated with chromosomal anomaly in 12% of cases, and occurs with additional congenital anomalies in 18% of cases (summary by Amiel et al., 2008).
Anal stenosis- MedGen UID:
- 82644
- •Concept ID:
- C0262374
- •
- Anatomical Abnormality
Abnormal narrowing of the anal opening.
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.
Slit-like opening of the exterior auditory meatus- MedGen UID:
- 339530
- •Concept ID:
- C1846459
- •
- Finding
A type of stenosis of the external auditory meatus in which the opening of the external auditory meatus appears as a vertical slit.
Spina bifida occulta- MedGen UID:
- 36380
- •Concept ID:
- C0080174
- •
- Congenital Abnormality
The closed form of spina bifida with incomplete closure of a vertebral body with intact overlying skin.
Scoliosis- MedGen UID:
- 11348
- •Concept ID:
- C0036439
- •
- Disease or Syndrome
The presence of an abnormal lateral curvature of the spine.
Shoulder dislocation- MedGen UID:
- 48655
- •Concept ID:
- C0037005
- •
- Injury or Poisoning
A displacement or misalignment of the humerus with respect to the other bones of the should joint. Note that a subluxation is a partial dislocation.
Facial palsy- MedGen UID:
- 87660
- •Concept ID:
- C0376175
- •
- Disease or Syndrome
Facial nerve palsy is a dysfunction of cranial nerve VII (the facial nerve) that results in inability to control facial muscles on the affected side with weakness of the muscles of facial expression and eye closure. This can either be present in unilateral or bilateral form.
Pectoralis hypoplasia- MedGen UID:
- 335435
- •Concept ID:
- C1846477
- •
- Finding
Underdevelopment of the pectoral muscle.
Upper limb muscle hypoplasia- MedGen UID:
- 335436
- •Concept ID:
- C1846478
- •
- Finding
Underdevelopment of muscles of the arm.
Fused cervical vertebrae- MedGen UID:
- 854386
- •Concept ID:
- C3887527
- •
- Congenital Abnormality
A congenital anomaly characterized by a joining (fusion) of two or more cervical vertebral bodies with one another.
Abnormal nasopharynx morphology- MedGen UID:
- 871265
- •Concept ID:
- C4025750
- •
- Anatomical Abnormality
A structural anomaly of the nasopharynx.
Choanal atresia- MedGen UID:
- 3395
- •Concept ID:
- C0008297
- •
- Congenital Abnormality
Absence or abnormal closure of the choana (the posterior nasal aperture). Most embryologists believe that posterior choanal atresia results from a failure of rupture between the 35th and 38th day of fetal life of the partition which separates the bucconasal or buccopharyngeal membranes. The resultant choanal atresia may be unilateral or bilateral, bony or membranous, complete or incomplete. In over 90 per cent of cases the obstruction is bony, while in the remainder it is membranous. The bony type of atresia is commonly located 1-2 mm. anterior to the posterior edge of the hard palate, and the osseous septum varies in thickness from 1 to 10 mm. In the membranous form of choanal atresia the obstruction usually occurs further posteriorly. In approximately one third of cases the atresia is bilateral.
Choanal stenosis- MedGen UID:
- 108427
- •Concept ID:
- C0584837
- •
- Finding
Abnormal narrowing of the choana (the posterior nasal aperture).
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).
Facial asymmetry- MedGen UID:
- 266298
- •Concept ID:
- C1306710
- •
- Finding
An abnormal difference between the left and right sides of the face.
Palpebral fissure narrowing on adduction- MedGen UID:
- 375896
- •Concept ID:
- C1846465
- •
- Finding
Duane retraction syndrome- MedGen UID:
- 4413
- •Concept ID:
- C0013261
- •
- Disease or Syndrome
Duane syndrome is a strabismus condition clinically characterized by congenital non-progressive limited horizontal eye movement accompanied by globe retraction which results in narrowing of the palpebral fissure. The lateral movement anomaly results from failure of the abducens nucleus and nerve (cranial nerve VI) to fully innervate the lateral rectus muscle; globe retraction occurs as a result of abnormal innervation of the lateral rectus muscle by the oculomotor nerve (cranial nerve III). At birth, affected infants have restricted ability to move the affected eye(s) outward (abduction) and/or inward (adduction), though the limitations may not be recognized in early infancy. In addition, the globe retracts into the orbit with attempted adduction, accompanied by narrowing of the palpebral fissure. Many individuals with Duane syndrome have strabismus in primary gaze but can use a compensatory head turn to align the eyes, and thus can preserve binocular vision and avoid diplopia. Individuals with Duane syndrome who lack binocular vision are at risk for amblyopia. The majority of affected individuals with Duane syndrome have isolated Duane syndrome (i.e., they do not have other detected congenital anomalies). Other individuals with Duane syndrome fall into well-defined syndromic diagnoses. However, many individuals with Duane syndrome have non-ocular findings that do not fit a known syndrome; these individuals are included as part of the discussion of nonsyndromic Duane syndrome.
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).
Microphthalmia- MedGen UID:
- 10033
- •Concept ID:
- C0026010
- •
- Congenital Abnormality
Microphthalmia is an eye abnormality that arises before birth. In this condition, one or both eyeballs are abnormally small. In some affected individuals, the eyeball may appear to be completely missing; however, even in these cases some remaining eye tissue is generally present. Such severe microphthalmia should be distinguished from another condition called anophthalmia, in which no eyeball forms at all. However, the terms anophthalmia and severe microphthalmia are often used interchangeably. Microphthalmia may or may not result in significant vision loss.\n\nPeople with microphthalmia may also have a condition called coloboma. Colobomas are missing pieces of tissue in structures that form the eye. They may appear as notches or gaps in the colored part of the eye called the iris; the retina, which is the specialized light-sensitive tissue that lines the back of the eye; the blood vessel layer under the retina called the choroid; or in the optic nerves, which carry information from the eyes to the brain. Colobomas may be present in one or both eyes and, depending on their size and location, can affect a person's vision.\n\nPeople with microphthalmia may also have other eye abnormalities, including clouding of the lens of the eye (cataract) and a narrowed opening of the eye (narrowed palpebral fissure). Additionally, affected individuals may have an abnormality called microcornea, in which the clear front covering of the eye (cornea) is small and abnormally curved.\n\nBetween one-third and one-half of affected individuals have microphthalmia as part of a syndrome that affects other organs and tissues in the body. These forms of the condition are described as syndromic. When microphthalmia occurs by itself, it is described as nonsyndromic or isolated.
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.
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.
Impaired convergence- MedGen UID:
- 78768
- •Concept ID:
- C0271379
- •
- Finding
Reduced ability to turn the eyes inward in order to focus on a nearby object.
Optic disc hypoplasia- MedGen UID:
- 224879
- •Concept ID:
- C1298695
- •
- Finding
Underdevelopment of the optic disc, that is of the optic nerve head, where ganglion cell axons exit the eye to form the optic nerve.
Impaired ocular abduction- MedGen UID:
- 375894
- •Concept ID:
- C1846462
- •
- Finding
An impaired ability of the eye to move in the outward direction (towards the side of the head).
Impaired ocular adduction- MedGen UID:
- 337588
- •Concept ID:
- C1846463
- •
- Finding
Reduced ability to move the eye in the direction of the nose.
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 the cardiovascular system
- Abnormality of the digestive system
- Abnormality of the eye
- Abnormality of the genitourinary system
- Abnormality of the musculoskeletal system
- Abnormality of the nervous system
- Abnormality of the respiratory system
- Ear malformation