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Crouzon syndrome is an autosomal dominant genetic disorder known as a branchial arch syndrome. Specifically, this syndrome affects the first branchial (or pharyngeal) arch, which is the precursor of the maxilla and mandible. Because the branchial arches are important developmental features in a growing embryo, disturbances in their development ...
Crouzonodermoskeletal syndrome is a disorder characterized by the premature joining of certain bones of the skull (craniosynostosis) during development and a skin condition called acanthosis nigricans. Some of the signs and symptoms of Crouzonodermoskeletal syndrome are similar to those seen with Crouzon syndrome.
Currently, Noack syndrome (ACPS type I) is now classified as Pfeiffer syndrome (ACS type V); Goodman syndrome (ACPS type IV) is classified as a variation of Carpenter syndrome (ACPS type II); and different researchers have combined Apert (ASC type I), Crouzon (ASC type II), and Pfeiffer (ASC type V) syndrome into Apert-Crouzon and Crouzon ...
Apert syndrome is a form of acrocephalosyndactyly, a congenital disorder characterized by malformations of the skull, face, hands and feet. It is classified as a branchial arch syndrome, affecting the first branchial (or pharyngeal) arch , the precursor of the maxilla and mandible .
Literature has suggested that persons with Crouzon syndrome typically have conductive hearing loss caused by middle ear effusion (or fluid in the middle ear) and perforation to ossicular fixation ( ossicles ), intratympanic bony masses ( tympanic membrane ), ossicular anomalies and closure of the oval window.
Examples include the craniosynostosis syndromes such as Crouzon syndrome, Pfeiffer syndrome, Treacher Collins syndrome, Apert syndrome, and Antley-Bixler syndrome. Cause [ edit ] Choanal atresia is caused by problems with the development of the nasal cavity and the palate . [1]
There are some genetic syndromes, in which hearing loss is one of the known characteristics. Some examples are Down syndrome (aneuploidy), Usher syndrome (autosomal recessive), Treacher Collins syndrome (autosomal dominant), Crouzon syndrome (autosomal dominant), and Alport syndrome (X-linked). [2]
Severe achondroplasia with developmental delay and acanthosis nigricans (SADDAN) is a very rare genetic disorder. This disorder is one that affects bone growth and is characterized by skeletal, brain, and skin abnormalities.
Crouzon was the first to describe a condition he called "craniofacial dysostosis", defined as a genetic branchial arch disorder that results in abnormal facial features. Today this condition is known as Crouzon's syndrome .
Treacher Collins syndrome (TCS) is a genetic disorder characterized by deformities of the ears, eyes, cheekbones, and chin. The degree to which a person is affected, however, may vary from mild to severe. Complications may include breathing problems, problems seeing, cleft palate, and hearing loss.
