microtia
Pronunciation: my-CROW-she-ah
Congenital underdevelopment of the external ear, often requiring reconstructive surgery.
Full Definition
Microtia is a congenital malformation characterized by underdevelopment of the external ear (auricle), ranging from mild structural abnormalities to complete absence of the ear. The condition affects approximately 1 in 8,000 births and is often associated with hearing loss due to aural atresia. Surgical reconstruction typically involves multiple staged procedures using rib cartilage grafts or prosthetic frameworks. The timing of reconstruction is crucial, usually performed when the child reaches 6-10 years of age when the ear has achieved 85% of adult size.
Usage
Usage note: Always specify the grade (I-IV) when documenting microtia severity.
In Context
- "The patient presented with grade III microtia requiring total ear reconstruction." — Consultation note
- "Microtia reconstruction using autologous costal cartilage was planned in two stages." — Treatment plan