Etiology
- Hyaline degeneration of the cartilage (endochondral pseudocyst) → leading to its liquefaction, without a cystic wall (similar to mucoid pseudocysts of the fingers)
Treatment
- Puncture the pseudocyst (sterile, clear yellow oily fluid)
- → Compressive dressing using two compresses, one anterior and one retroauricular, held in place by two transfixing the pinna
- Simple incision and drainage
- Definitive solution
- Making a simple incision in the retroauricular skin, excising a disc of cartilage from the posterior wall of the cyst, and resuturing the incision under a compression dressing
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