Phenotypes
Db Link Name Definition Comment Is a
HPO HP:0030961 Microspherophakia "Lens of the eye is smaller than normal and spherically shaped." [] HP:0008063
HPO HP:0001647 Bicuspid aortic valve "The presence of an aortic valve with two instead of the normal three cusps (flaps). Bicuspid aortic valvue is a malformation of a commissure (small space between the attachment of each cusp to the aortic wall) and the adjacent parts of the two corresponding cusps forming a raphe (the fused area of the two underdeveloped cusps turning into a malformed commissure between both cusps; the raphe is a fibrous ridge that extends from the commissure to the free edge of the two underdeveloped, conjoint cusps)." [HPO:probinson, PMID:17467434, PMID:24827036] A normal aortic valve is composed of three aortic-valve cusps, each semilunar in appearance. The leaflets are housed within a small dilatation of the proximal aorta associated with each cusp, called the sinuses of Valsalva or aortic sinuses, and their association with the respective coronary ostia identifies them: left, right, and non-coronary sinuses. Each cusp is attached to the wall of the aorta by the outward edges of its semicircular border, and the attachment point between each leaflet is called a commissure [PMID:24827036]. HP:0031567
HPO HP:0002816 Genu recurvatum "An abnormally increased extension of the knee joint, so that the knee can bend backwards." [HPO:probinson, PMID:9580896] Individuals with genu recurvatum may experience knee pain, display an extension gait pattern, and have poor proprioceptive control of terminal knee extension. HP:0010500
HPO HP:0100775 Dural ectasia "A widening or ballooning of the dural sac surrounding the spinal cord usually at the lumbosacral level." [HPO:sdoelken] Dural ectasia is one of the major manifestations of Marfan syndrome. It may cause low back pain, headaches and neurological signs such as weakness and loss of bowel and bladder function, but in many patients it is asymptomatic. It is also a cause of posterior vertebral scalloping present in radiographs in patients who are diagnosed with Neurofibromatosis. Dural ectasia may also manifest in Ehlers-Danlos Syndrome, cauda equina syndrome and in ankylosing spondylitis. HP:0010303
HPO HP:0001634 Mitral valve prolapse "One or both of the leaflets (cusps) of the mitral valve bulges back into the left atrium upon contraction of the left ventricle." [HPO:probinson] Mitral valve prolapse can be associated with mitral regurgitation. HP:0001633
HPO HP:0001377 Limited elbow extension "Limited ability to straighten the arm at the elbow joint." [HPO:probinson] HP:0002996
HPO HP:0000268 Dolichocephaly "An abnormality of skull shape characterized by a increased anterior-posterior diameter, i.e., an increased antero-posterior dimension of the skull. Cephalic index less than 76%. Alternatively, an apparently increased antero-posterior length of the head compared to width. Often due to premature closure of the sagittal suture." [HPO:probinson, PMID:19125436] Cephalic index is the ratio of head width expressed as a percentage of head length. The normal range is 76-80.9%. Head length is measured between the glabella (the most prominent point on the frontal bone above the root of the nose) and the most prominent part of the occiput in the midline, using spreading calipers. Head width is measured between the most lateral points of the parietal bones on each side of the head, using spreading calipers. Cephalic index standards are derived from Caucasians and have limited relevance for other races and ethnicities. Current norms have limited validity because of changes in infant sleeping position and consequent changes in head shape. New data should be developed. Dolichocephaly is distinct from Prominent occiput, but both can be present in the same individual and should be coded separately. Scaphocephaly is a subtype of dolichocephaly where the anterior and posterior aspects of the cranial vault are pointed (boat-shaped). HP:0002648
HPO HP:0000577 Exotropia "A form of strabismus with one or both eyes deviated outward." [HPO:probinson] HP:0020049, HP:0032012
HPO HP:0000767 Pectus excavatum "A defect of the chest wall characterized by a depression of the sternum, giving the chest (\"pectus\") a caved-in (\"excavatum\") appearance." [HPO:probinson] HP:0000766
HPO HP:0001166 Arachnodactyly "Abnormally long and slender fingers (\"spider fingers\")." [HPO:probinson] HP:0001238, HP:0100807
HPO HP:0001083 Ectopia lentis "Dislocation or malposition of the crystalline lens of the eye. A partial displacement (or dislocation) of the lens is described as a subluxation of the lens, while a complete displacement is termed luxation of the lens. A complete displacement occurs if the lens is completely outside the patellar fossa of the lens, either in the anterior chamber, in the vitreous, or directly on the retina. If the lens is partially displaced but still contained within the lens space, then it is termed subluxation." [HPO:probinson] HP:0000517
HPO HP:0002751 Kyphoscoliosis "An abnormal curvature of the spine in both a coronal (lateral) and sagittal (back-to-front) plane." [HPO:probinson] HP:0002650, HP:0002808
HPO HP:0025599 Inferior oblique muscle overaction "A common ocular motility disorder characterized by vertical incomitance of the eyes in lateral gaze. In primary inferior oblique muscle overaction, an upshoot of the adducting eye occurs when gaze is directed into the field of action of the inferior oblique muscle, producing a greater upward excursion of the adducted eye than of the abducted eye." [ORCID:0000-0003-0986-4123, PMID:11545636] HP:0025596
HPO HP:0000272 Malar flattening "Underdevelopment of the malar prominence of the jugal bone (zygomatic bone in mammals), appreciated in profile, frontal view, and/or by palpation." [HPO:probinson, ORCID:0000-0001-5889-4463, PMID:19125436] The malar process is the most medial and superior portion of the bony midface, articulating with the maxilla and temporal and sphenoid bones, contiguous with the lateral boundary of the nasal bridge. The term malar hypoplasia is no longer preferred because surface examination cannot distinguish hypoplasia from hypotrophy. {xref="ORCID:0000-0001-5889-4463"} HP:0012369
HPO HP:0000490 Deeply set eye "An eye that is more deeply recessed into the plane of the face than is typical." [PMID:19125427] This finding should be distinguished from a prominent supraorbital ridge or inferior orbital margin. In Deeply set eyes, the globe is recessed in comparison to the overall prominence of the face. There is no known objective measurement, and diagnosing this feature depends heavily on the experience of the observer. HP:0100886
HPO HP:0000278 Retrognathia "An abnormality in which the mandible is mislocalised posteriorly." [HPO:probinson] HP:0000277
HPO HP:0000347 Micrognathia "Developmental hypoplasia of the mandible." [HPO:probinson] Mandibular hypoplasia, also known as micrognathia, is a term that describes an abnormally small lower jaw. HP:0009118
HPO HP:0000490 Deeply set eye "An eye that is more deeply recessed into the plane of the face than is typical." [PMID:19125427] This finding should be distinguished from a prominent supraorbital ridge or inferior orbital margin. In Deeply set eyes, the globe is recessed in comparison to the overall prominence of the face. There is no known objective measurement, and diagnosing this feature depends heavily on the experience of the observer. HP:0100886
HPO HP:0000218 High palate "Height of the palate more than 2 SD above the mean (objective) or palatal height at the level of the first permanent molar more than twice the height of the teeth (subjective)." [PMID:19125428] The measuring device for this assessment is described in (Hall JG, Froster-Iskenius UG, Allanson JE, Gripp K, Slavotinek A. 2006. Handbook of Normal Physical Measurements. 2nd edition. Oxford Medical, publishers). A high palate is often associated with a narrow palate. However, a narrow palate can easily give a false appearance of a high palate. Height and width of the palate should be assessed and coded separately. We do not recommend the subjective determination because this term can be overused and\napplied inaccurately. HP:0000174
HPO HP:0003302 Spondylolisthesis "Complete bilateral fractures of the pars interarticularis resulting in the anterior slippage of the vertebra." [HPO:probinson, PMID:20411054] HP:0000925
HPO HP:0000098 Tall stature "A height above that which is expected according to age and gender norms." [HPO:probinson] HP:0000002
HPO HP:0000678 Dental crowding "Changes in alignment of teeth in the dental arch" [PMID:19125428, PMID:31468724] Overlapping teeth within an alveolar ridge. HP:0000692
HPO HP:0002107 Pneumothorax "Accumulation of air in the pleural cavity leading to a partially or completely collapsed lung." [HPO:probinson] HP:0002103
HPO HP:0001704 Tricuspid valve prolapse "One or more of the leaflets (cusps) of the tricuspid valve bulges back into the right atrium upon contraction of the right ventricle." [HPO:probinson] HP:0001702
HPO HP:0001840 Metatarsus adductus "The metatarsals are deviated medially (tibially), that is, the bones in the front half of the foot bend or turn in toward the body." [HPO:probinson, PMID:19125433] Metatarsus varus (adductus) is one of the most common foot deformities, that is defined as a transverse plane deformity in Lisfranc's (tarsometatarsal) joints in which the metatarsals are deviated medially. The relationship between talus and calcaneus is normal. On inspection the toes angle abruptly towards the midline, creating a C-shaped lateral foot border with a prominent styloid process of the 5th metatarsal. The result is that the forefoot is twisted inwards relative to the heel, so that the sole faces the midline. HP:0001832