Keratosis Obturansと外耳道真珠腫の各1症例について

抄録

Case No.1. A 44- year-old male presented with left otalgia of three day's duration. His left ear was plugged with layers of keratin and polyp. Under local anesthesia, the polyp and keratin debris were removed without skin incision. No further treatment was needed. Considering the clinical feature and the histopathologic findings, a diagnosis of keratosis obturans was made.
Case No.2. A 61-year-old male had intermittent otorrhea and otalgia for several months in the left ear. The diagnosis of otitis externa was made by an otolaryngologist, and topical medications were applied. Some white patches of keratin coat and ulceration were found in the antero - inferior canal wall. Mastoid X-ray study was reported as normal. A diagnosis of external auditory canal cholesteatoma was made. Surgical operation by a post-auricular incision was performed. After removal of the circumscribed cholesteatoma, the bony margin was curetted enough until the sound bone tissue appeared. Then the defect in the antero-inferior osseous canal was repaired with autograft auricular cartilage and fascia temporalis. Postoperatively, his hearing was preserved and there was no evidence of recurrence one year after the surgery.