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Microtia is a congenital deformity where the auricle (external ear) is underdeveloped. A completely undeveloped auricle is referred to as anotia. Because microtia and anotia have the same origin, it can be referred to as microtia-anotia. [1] Microtia can be unilateral (one side only) or bilateral (affecting both sides).
Burt Brent is a retired reconstructive plastic surgeon best known for his work in reconstructing the absent outer ear. He built upon the techniques of his mentor, Dr. Radford Tanzer [1] of the Mary Hitchcock Clinic at Dartmouth Medical School and repaired ear defects in 1,800 patients, most of them children born with ear deformities such as microtia.
This engraving depicts two cats on a wall with a dog barking below them. The spotted cat hisses at the dog while the deaf white cat dozes, unaware of the barking. Congenital sensorineural deafness occurs commonly in domestic cats with a white coat. It is a congenital deafness caused by a degeneration of the inner ear. [1] Deafness is far more ...
The several components or degrees of development range from an ear tag, preauricular appendage, preauricular tag, or accessory tragus, to supernumerary ears or polyotia. [7] It is a relatively common congenital anomaly of the first branchial arch or second branchial arches.
Bronchial atresia is a rare congenital disease characterized by segmental or lobar emphysema and, in some cases, mucoid impaction. The exact cause of bronchial atresia is unknown; the lobar bronchi, subsegmental bronchi, and distal bronchioles develop in the fifth, sixth, and sixteenth weeks of fetal development, respectively.
A conductive hearing loss along with middle ear disease is most commonly seen in patients with Pfeiffer syndrome; although, there have been reports of mixed hearing loss as well. The hearing loss is most typically caused by stenosis or atresia of the auditory canal, middle ear hypoplasia and ossicular hypoplasia (Vallino-Napoli, 1996).
The name comes from the Greek-derived Neo-Latin prefix oto-("ear") and the suffix -cephaly ("head"). In 2018, Indian neonatologist Kanwar Singh and his associates described a particularly severe case of otocephaly with cyclopia, agnathia, complete astomia and synotia. They dubbed the resulting condition Kanwar syndrome. [2]
Pages in category "Congenital disorders of ears" The following 9 pages are in this category, out of 9 total. ... Microtia; P. Preauricular sinus and cyst