1. Dr.Sudeep K.C.

2. DISEASES OF THE PINNA A)Congenital disorders B)Trauma to the auricle C)Inflammatory disorders

3. A)Congenital Disorders 1) Bat Ear(lop ear):Abnormally protuding ear with poorly developed antihelix. 2)Preauricular Appendages: skin covered tag may contain small pieces of cartilage.

4. 3)Preauricular pit or sinus : commonly seen at the root of helix and due to incomplete fusion of tubercles.

5. 4)Anotia : complete absence of pinna

6. 5)Macrotia: excessively large pinna 6)Microtia : It is a major developmental anomaly and is frequently associated with anomalies of external auditory canal. Hearing loss is frequent

7. B)Trauma to the Auricle 1)Haematoma of the Auricle : It is the collection of blood between auricular cartilage and its perichondrium due to blunt trauma. Extravasted blood may clot and organize, resulting in a typical deformity called cauliflower ear. Treatment: Aspiration of haematoma and a pressure dressing.

9. 2)Lacerations: They are repaired as early as possible. The perichondrium is stitched with absorbable sutures with broad spectrum antibiotics. special care is taken to prevent stripping of perichondrium

10. 3)Avulsion of pinna: If there is partial avulsion primary reattachement is considered. For complete avulsion pinna can be reimplanted by microvascular technique.

11. 4)Frost Bite: Injury varies between erythema, oedema, bullae formation,necrosis of skin and complete necrosis with loss of affected part. Treatment:  Rewarming with cotton piece  Analgesics for pain  Systemic antibiotics  Surgical debridement

12. 5)Keloid of Auricle: It may follow trauma or piercing of ear.Usual sites are lobule or helix. Treatment:  Surgical excision  Recurrence can be avoided by pre and post operative radiation.

13. C)Inflammatory Disorders 1)Perichondritis : It results from infection secondary to lacerations, haematoma, or surgical incision.  Symptoms: Red, hot and painful pinna which feels stiff. later abscess may form in between cartilage and perichondrium with necrosis of cartilage. Treatment:  Antibiotics and local application of 4%almunium acetate compresses.  Abscess should be drained.

14. 2)Relapsing polychondritis: It is a rare autoimmune disorder involving cartilage.The entire auricle except its lobule is inflammed and tender.External ear canal becomes stenotic. Treatment: high doses of systemic steroids. 3)Chondro dermatitis nodularis chronica helicis: Small painful nodules appear in the free border of helix in men about 50 yrs of age.Nodules are tender and patient unable to sleep on affected side. Treatment: Excision of nodule with its skin and cartilage.