报告5例岩尖病变的处理经验,3例为胆脂瘤,1例为胆固醇肉芽肿,1例为假阳性。认为有对比的薄层 CT 扫描有助于鉴别埋藏于岩尖的病变。良性病变有扩张的边缘,恶性病变呈现有浸润、虫蚀样边缘。神经瘤、脑膜瘤、大动脉瘤呈现对比增强信号,而胆脂瘤、胆固醇肉芽肿、粘液囊肿及皮样囊肿则不增强。MRL检查可补充 CT 扫描的某些不足,但不能代替 Reported treatment of 5 cases of cusp lesions, 3 cases of cholesteatoma, 1 case of cholesterol granuloma, and 1 case of false positive. It is believed that a contrasting thin-slice CT scan can help identify lesions that are buried at the tip of the rock. Benign lesions have dilated edges, and malignant lesions show infiltrates and worm-eaten edges. Neuromas, meningiomas, and large aneurysms showed contrast-enhanced signals, whereas cholesteatoma, cholesterol granuloma, mucinous cysts, and dermoid cysts did not increase. The MRL check may supplement some of the deficiencies of the CT scan, but it cannot replace