Question
Diagnose the ear condition as shown in the picture below ?
A. Infected Preauricular sinus.
B. Post-auricular fistula.
C. Furunculosis.
D. Otitis Externa.
Show Answer
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Correct Answer » A
Explanation
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Ans : A. Infected Preauricular Sinus.
Preauricular sinus
- They are common congenital malformations .
- Frequently noted as small dimple adjacent to the external ear, usually at the anterior margin of the ascending limb of the helix.
- They are inherited in an incomplete autosomal dominant pattern, with reduced penetrance and variable power of expression.
- Occurs due to incomplete fusion of 2 of the 6 hillocks that arise from the first and second branchial arches.
- It is a blind track lined by squamous epithelium
- Most people with preauricular sinuses are asymptomatic.
- Occasionally a preauricular sinus can become infected.
- Antibiotics needed when infection occurs .
- If an abscess is present, it must be incised and drained.
- Surgical excision of the sinus track is indicated with recurrent infections, preferably after significant healing of the infection.
