Lo W W, Solti-Bohman L G, Brackmann D E, Gruskin P
Radiology. 1984 Dec;153(3):705-11. doi: 10.1148/radiology.153.3.6494466.
Cholesterol granuloma of the petrous apex is a readily recognizable and treatable entity that is more common than previously realized. Cholesterol granuloma grows slowly in the petrous apex as a mass lesion until it produces hearing loss, tinnitus, vertigo, and facial twitching. Twelve cases of cholesterol granuloma of the petrous apex are illustrated; ten of these are analyzed in detail, especially with respect to CT findings. A sharply and smoothly marginated expansile lesion in the petrous apex, isodense with brain and nonenhancing on CT, is in all probability a cholesterol granuloma. Cholesterol granuloma and cholesteatoma of the petrous apex are different lesions and treated differently. Cholesterol granuloma can be treated simply and effectively by drainage and permanent fistulization. Preoperative recognition by CT is important for planning proper treatment.
岩尖胆固醇肉芽肿是一种易于识别且可治疗的疾病，其发病率比之前认为的更高。胆固醇肉芽肿在岩尖缓慢生长，形成肿块病变，直至导致听力丧失、耳鸣、眩晕和面部抽搐。本文展示了12例岩尖胆固醇肉芽肿病例；其中10例进行了详细分析，特别是关于CT表现。岩尖边界清晰、光滑的膨胀性病变，在CT上与脑实质等密度且无强化，很可能是胆固醇肉芽肿。岩尖胆固醇肉芽肿和胆脂瘤是不同的病变，治疗方法也不同。胆固醇肉芽肿可通过引流和永久性造瘘得到简单而有效的治疗。术前通过CT识别对于规划恰当的治疗很重要。
