Seaver Cassidy syndrome

Title

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Other Names:

Hypertelorism, downslanting palpebral fissures, malar hypoplasia, and apparently low-set ears associated with joint and scrotal anomalies; Facial dysmorphism shawl scrotum joint laxity

Categories:

Congenital and Genetic Diseases; Nervous System Diseases

Summary Summary

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs.

Orpha Number: 1778

Definition

Facial dysmorphism-shawl scrotum-joint laxity syndrome is characterised by facial dysmorphism (hypertelorism, telecanthus, downslanting palpebral fissures, ptosis, malar hypoplasia, broad nasal bridge, thin upper lip, smooth philtrum, and low-set prominent ears) and associated with joint anomalies (genu valgum or cubitus valgus, hyper-extensible joints, etc.). It has been described in two patients (a mother and her son). The boy also had hypoplastic shawl scrotum and cryptorchidism, and the mother had mild intellectual deficit.

Visit the Orphanet disease page for more resources.

Last updated: 9/1/2007

Symptoms Symptoms

This table lists symptoms that people with this disease may have. For most diseases, symptoms will vary from person to person. People with the same disease may not have all the symptoms listed. This information comes from a database called the Human Phenotype Ontology (HPO) . The HPO collects information on symptoms that have been described in medical resources. The HPO is updated regularly. Use the HPO ID to access more in-depth information about a symptom.

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Medical Terms	Other Names	Learn More: HPO ID
80%-99% of people have these symptoms
Cryptorchidism	Undescended testes Undescended testis [ more ]	0000028
Downslanted palpebral fissures	Downward slanting of the opening between the eyelids	0000494
Epicanthus	Eye folds Prominent eye folds [ more ]	0000286
Genu valgum	Knock knees	0002857
Hypertelorism	Wide-set eyes Widely spaced eyes [ more ]	0000316
Hypoplasia of the zygomatic bone	Cheekbone underdevelopment Decreased size of cheekbone Underdevelopment of cheekbone [ more ]	0010669
Low-set ears	Low set ears Lowset ears [ more ]	0000369
Nevus	Mole	0003764
Protruding ear	Prominent ear Prominent ears [ more ]	0000411
Ptosis	Drooping upper eyelid	0000508
Shawl scrotum	Scrotum surrounds penis	0000049
Smooth philtrum		0000319
Telecanthus	Corners of eye widely separated	0000506
Wide nasal bridge	Broad nasal bridge Broad nasal root Broadened nasal bridge Increased breadth of bridge of nose Increased breadth of nasal bridge Increased width of bridge of nose Increased width of nasal bridge Nasal bridge broad Wide bridge of nose Widened nasal bridge [ more ]	0000431
30%-79% of people have these symptoms
Abnormality of coagulation		0001928
Abnormality of the voice	Voice abnormality	0001608
Cubitus valgus	Outward turned elbows	0002967
Intellectual disability, mild	Mental retardation, borderline-mild Mild and nonprogressive mental retardation Mild mental retardation [ more ]	0001256
Joint hyperflexibility	Joints move beyond expected range of motion	0005692
Large fontanelles	Wide fontanelles	0000239
Low posterior hairline	Low hairline at back of neck	0002162
Mandibular prognathia	Big lower jaw Increased projection of lower jaw Increased size of lower jaw Large lower jaw Prominent chin Prominent lower jaw [ more ]	0000303
Neurological speech impairment	Speech disorder Speech impairment Speech impediment [ more ]	0002167
Umbilical hernia		0001537

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Last updated: 1/1/2021

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Learn More Learn More

These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.

In-Depth Information

The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.
PubMed is a searchable database of medical literature and lists journal articles that discuss Seaver Cassidy syndrome. Click on the link to view a sample search on this topic.

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