腐蚀性中耳炎可单独存在或伴有胆脂瘤、软组织肿块,听骨链及岩骨可以破坏。过去的X线平片检查注意力多集中在胆脂瘤引起的骨质破坏,而忽略了更为常见的腐蚀性中耳炎。作者对202耳进行了观察,包括正常耳与腐蚀性中耳炎的平片检查与内摆线断层对照、37耳的手术对照,并提出经眶前后位及侧斜位平片可以有效地观察中耳骨质变化。经眶前后位片因将眼眶放大,可以容易、清楚地显示中耳情况。投照时病人取坐位,颈部前屈,球管向尾侧倾斜10度,使X线束与听眦线平行。个别情况下可投照倾斜15度的前后斜位 Corrosive otitis media can exist alone or with cholesteatoma, soft tissue mass, ossicular chain and petrous bone can be destroyed. In the past, radiographs focused more on the destruction of bone caused by cholesteatoma than on the more common form of otitis media. The author of the 202 ears were observed, including normal ears and caustic otitis media plain examination and hypophysectomy control, 37 ears surgical control, and proposed by the orbital anteroposterior and lateral oblique plain film can effectively observe the middle ear Bone changes. The orbital anterior and posterior films due to the orbital enlargement, you can easily and clearly show the middle ear situation. Projection when the patient take the seat, neck flexion, the tube tilt to the tail side of 10 degrees, so that the X-ray beam and listen to parallel lines. In some cases can vote tilting 15 degrees before and after the oblique position