| 牛昊,马秀丽,周军,安奇.眼结膜下脂肪疝与迷芽瘤的CT鉴别诊断[J].中国医学影像技术,2009,25(12):2208~2210 |
| 眼结膜下脂肪疝与迷芽瘤的CT鉴别诊断 |
| CT differential diagnosis of subconjunctival fat prolapse and choristoma |
| 投稿时间：2009-05-25 修订日期：2009-08-04 |
| DOI： |
| 中文关键词: 结膜下脂肪疝 迷芽瘤 体层摄影术,X线计算机 |
| 英文关键词:Subconjunctival fat prolapse Choristoma Tomography, X-ray computed |
| 基金项目: |
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| 中文摘要: |
| 目的 探讨眼结膜下脂肪疝与迷芽瘤的CT特征,评价CT在鉴别诊断中的价值。方法 回顾性分析经手术病理证实的眼结膜下脂肪疝和迷芽瘤共38例,其中脂肪疝18例,迷芽瘤20例。所有病例均进行CT轴扫及冠状面重建。结果 脂肪疝CT表现为眼球颞上象限结膜下与肌锥内脂肪相连续的新月形或牛角形脂肪密度影;迷芽瘤表现为眼球颞侧结膜下不与肌锥内脂肪相连续的新月形或三角形脂肪密度影。脂肪疝与迷芽瘤从发病年龄、性别、单双眼发病率及有无合并泪腺脱位的比较差异均有统计学意义。结论 眼结膜下脂肪疝常见于老年男性患者的双眼颞上象限;眼结膜下迷芽瘤常见于青少年患者的单眼颞侧。CT有助于这两种疾病的鉴别诊断。 |
| 英文摘要: |
| Objective To investigate CT features of subconjunctival fat prolapse and choristoma. Methods Thirty-eight patients, including 18 with subconjunctival fat prolapse and 20 with choristoma, were retrospectively analyzed. Transverse plain CT scan was performed in all the patients, and then coronal plane images was reconstructed at CT workstation. Results CT features of subconjunctival fat prolapse revealed a crescent-shaped or horn-shaped fat density mass continuous with the orbital fat in the superior temporal quadrant of the orbit. CT features of choristoma revealed a crescent-shaped or triangle fat density mass incontinuous with the orbital fat in the temporal side. Conclusion Subconjunctival fat prolapse typically occurs in bilateral superior temporal quadrant of the orbit in elderly males. Subconjunctival choristoma occurs in the unilateral temporal side in adolescent. CT is helpful to distinguish subconjunctival fat prolapse and choristoma. |
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