Sobel Rachel K, Goldstein Scott M
Wills Eye Institute Oculoplastic Service and Thomas Jefferson University, Philadelphia, Pennsylvania 52242, USA.
Orbit. 2012 Apr;31(2):94-6. doi: 10.3109/01676830.2011.605507. Epub 2012 Jan 25.
This study aims to quantify the prevalence of trochlear calcification.
A retrospective case review was performed on orbital CT scans ordered at Wills Eye Emergency room and Jefferson Hospital for Neuroscience for patients from June 2009 through September of 2009.
In our series, we examined 132 scans, 61% (81/132) men, 39% (51/132) women, ranging in age from 10-83. We found a 13% (17/132) prevalence of calcification of the trochlea, 53% (9/17) unilateral and 47% (8/17) bilateral. Forty-one percent (7/17) were female, 59% male (10/17). Age (19-83) was not a factor in the presence of trochlear calcification. The calcification either came straight off of the bone or was free-floating in the trochlea.
Our study establishes that calcification of the trochlea is common in the general population with a prevalence of 13%. Calcification of the trochlea should be considered in the differential diagnosis of hyperintense densities in the superomedial orbit, especially in cases of trauma where it can be confused with a foreign body.
本研究旨在量化滑车钙化的患病率。
对2009年6月至2009年9月期间在威尔斯眼科急诊室和杰斐逊神经科学医院进行眼眶CT扫描的患者进行回顾性病例分析。
在我们的研究系列中，共检查了132例扫描，其中男性占61%（81/132），女性占39%（51/132），年龄范围为10 - 83岁。我们发现滑车钙化的患病率为13%（17/132），单侧钙化占53%（9/17），双侧钙化占47%（8/17）。41%（7/17）为女性，59%为男性（10/17）。年龄（19 - 83岁）并非滑车钙化的影响因素。钙化要么直接附着于骨上，要么在滑车中呈游离状态。
我们的研究表明，滑车钙化在普通人群中很常见，患病率为13%。在眶内上象限高密度影的鉴别诊断中应考虑滑车钙化，尤其是在创伤病例中，它可能与异物混淆。
