Johnson D W, Voorhees R L, Lufkin R B, Hanafee W, Canalis R
Radiology. 1983 Sep;148(3):733-7. doi: 10.1148/radiology.148.3.6878694.
Computed tomography (CT) of the temporal bone was performed in 64 patients thought to have a cholesteatoma of the middle ear. Twenty had not had surgery before, while 44 had been operated on; special consideration was given to 21 patients who were scanned immediately before a second operation and had confirmation of the CT findings. Inflammatory disease without cholesteatoma was characterized by absence of erosion of the otic capsule or ossicular chain. Sharply circumscribed cholesteatomas were easily diagnosed by CT. When they were combined with scarring, granulation tissue, or postsurgical changes, the resulting soft-tissue masses were indistinguishable, although cholesteatoma may be suspected if there is evidence of progressive bone erosion about the middle ear. CT can play a major role in postoperative follow-up by confirming that the ear is normal and demonstrating displacement of ossicular grafts or prostheses.
对64例疑似中耳胆脂瘤的患者进行了颞骨计算机断层扫描（CT）。其中20例此前未接受过手术，44例曾接受过手术；对21例在二次手术前立即进行扫描并经CT结果证实的患者给予了特别关注。无胆脂瘤的炎性疾病表现为听骨链或听囊无侵蚀。边界清晰的胆脂瘤通过CT很容易诊断。当它们与瘢痕、肉芽组织或术后改变合并时，所形成的软组织肿块难以区分，不过如果有中耳周围骨质进行性侵蚀的证据，则可能怀疑为胆脂瘤。CT在术后随访中可发挥重要作用，通过确认耳部正常以及显示听骨移植物或假体的移位情况。
