由于胆脂瘤的持续压迫，他的听力逐渐下降。

His hearing deteriorated due to the persistent pressure from the ___cholesteatoma.

医生通过CT扫描确认了患者耳朵里的胆脂瘤。

The doctor confirmed the presence of a ___cholesteatoma in the patient's ear through a CT scan.

医生通过CT扫描发现患者耳朵里有一个可能导致听力丧失的胆脂瘤。

The doctor found a ___cholesteatoma in the patient's ear through a CT scan, which could lead to hearing loss.