Silver A J, Janecka I, Wazen J, Hilal S K, Rutledge J N
Radiology. 1987 Jul;164(1):47-51. doi: 10.1148/radiology.164.1.3588926.
Patients with facial palsy and middle ear disease, which may be chronic but clinically occult, may have a cholesteatoma with extension medially along the facial canal. In two patients, axial computed tomographic (CT) scans demonstrated involvement of the medial petrous bone. Patients with vertigo and chronic middle ear disease may have a cholesteatoma with a "fistula" between the middle and inner ears. Although the fistula usually involves the lateral semicircular canal, the cholesteatoma may pass through the oval window. In two patients, coronal CT scans showed extension to the oval window in one and through it in the other.
患有面神经麻痹和中耳疾病（可能是慢性但临床隐匿的）的患者，可能存在胆脂瘤并沿面神经管向内侧延伸。在两名患者中，轴向计算机断层扫描（CT）显示岩骨内侧受累。患有眩晕和慢性中耳疾病的患者，可能存在中耳和内耳之间有“瘘管”的胆脂瘤。虽然瘘管通常累及外侧半规管，但胆脂瘤可能穿过卵圆窗。在两名患者中，冠状位CT扫描显示，一名患者的胆脂瘤延伸至卵圆窗，另一名患者的胆脂瘤穿过了卵圆窗。
