Aural atresia is the lack of a fully developed ear canal, eardrum, middle ear space, and ear bones. Aural atresia is often accompanied by microtia, a congenital deformity of the outer ear. Microtia and atresia may be unilateral (one ear) or bilateral (both ears).

Atresia (also known as aural atresia) is the absence or closure of the external auditory ear canal. The malformation of the middle ear bones (incus, stapes, and malleus) may be affected including the narrowing of the ear canal, known as canal stenosis. …

Oct 3, 2022 · Aural atresia is the absence of a patent ear canal, which may be either acquired or congenital. Acquired aural atresia is most often due to an inflammatory process or following trauma or otologic surgery.

Ear Community is a 501 (c) (3) nonprofit organization that offers a warm and supportive community for individuals who were born with Microtia (missing or underdeveloped ears) and Aural Atresia (absent or underdeveloped ear canals resulting in hearing loss).

Feb 20, 2025 · Microtia and atresia are both congenital conditions that affect the outer ear, but they differ in their nature and impact: Microtia refers to the underdevelopment or complete absence of the external ear.

Congenital aural atresia is a common condition. It happens when the ear canal does not develop normally. Atresia can be in one ear (unilateral) or both (bilateral). It is often part of microtia, a condition when the outside of the ear (pinna) does not form correctly.

Microtia is when the outer ear does not fully develop during the first trimester of pregnancy or when the outer ear is absent, (known as anotia). Atresia is the absence of the ear canal, resulting in hearing loss.

Jul 9, 2024 · External auditory canal atresia, also known as congenital aural atresia, is characterized by complete or incomplete bony atresia of the external auditory canal (EAC), often in association with a dysplastic auricle and an abnormal middle ear cavity or ossicles.

Microtia and aural atresia are usually first noticed when the child is born. The ear will be abnormally small or malformed, and the ear canal absent. Due to the missing ear canal, the child will fail the initial newborn hearing screening, and will be referred for further audiologic testing.

Congenital aural atresia (CAA) is an ear malformation evident at birth, involving various degrees of failed external ear canal (EAC) development. The incidence is one in 10,000 to 20,000 births. Both right ear and male dominance are evident; CAA is typically unilateral.