副脾的CT特征。
CT features of the accessory spleen.
作者信息
Mortelé Koenraad J, Mortelé Bart, Silverman Stuart G
机构信息
Division of Abdominal Imaging and Intervention, Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St., Boston, MA 02115, USA.
出版信息
AJR Am J Roentgenol. 2004 Dec;183(6):1653-7. doi: 10.2214/ajr.183.6.01831653.
OBJECTIVE
The purpose of this study was to describe the prevalence and CT features of the accessory spleen.
CONCLUSION
Accessory spleens are present in 16% of patients undergoing contrast-enhanced abdominal CT. Typically, accessory spleens appear on CT scans as well-marginated, round masses that are smaller than 2 cm and enhance homogeneously on contrast-enhanced images. When accessory spleens are smaller than 1 cm, their attenuation may be lower than that of the spleen because of partial volume effects. Their most frequent location (22%) is posteromedial to the spleen; anterolateral to the upper pole of the left kidney; and lateral, posterior, and superior to the tail of the pancreas. Familiarity with these characteristic features may differentiate them from other pathologic findings in the upper abdomen.
目的
本研究的目的是描述副脾的患病率及CT特征。
结论
在接受腹部增强CT检查的患者中，16%存在副脾。通常，副脾在CT扫描上表现为边界清晰的圆形肿块，直径小于2 cm，在增强图像上均匀强化。当副脾小于1 cm时，由于部分容积效应，其密度可能低于脾脏。其最常见的位置（22%）是脾脏的后内侧；左肾上极的前外侧；以及胰腺尾部的外侧、后方和上方。熟悉这些特征有助于将它们与上腹部的其他病理表现区分开来。
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