Non-Ossifying Fibroma of the Temporal Bone; A Case Report.

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Non-ossifying fibroma is relatively common in long bones, but is very rare in the head and neck. The patient was a 52-year-old man who had had gradually increasing left hearing loss for several years. He consulted a doctor because of headache. CT scan revealed an abnormal shadow in the middle fossa of the brain. Curettage was performed by neurosurgeons through the middle cranial fossa. He was referred to our department because of left hearing loss. The left external auditory meatus was filled with tumor. A pure tone audiogram showed mixed-type hearing loss. Roentgenography showed a sharply delineated, radiolucent lesion with a sclerotic border. Curettage of the tumor which occupied the external canal was performed. The histopathologic diagnosis was non-ossifying fibroma of the temporal bone. Hearing improved by 20 dB postoperatively.
耳鼻咽喉科臨床学会の論文

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