肠系膜上动脉压迹一般情况下Ｘ线诊断并不困难 ,由于平时对它的认识不足 ,容易漏诊。本文收集了52例 ,着重分析有关Ｘ线表现的特征 ,并对Ｘ线分度及临床意义作一初步探讨。1　资料与方法1·1　临床资料　本组 52例 ,男 2 4例 ,女 2 8例 ,年龄7～ 75岁。多为瘦长体形 ,常有间歇 Superior mesenteric artery sigmoid X-ray diagnosis under normal circumstances is not difficult, due to its lack of understanding of normal, easy to miss. This article collected 52 cases, focusing on the analysis of the characteristics of the X-ray findings, and X-ray classification and clinical significance of a preliminary study. 1 Materials and Methods 1.1 Clinical data The group of 52 patients, 24 males and 28 females, aged 7 to 75 years. Mostly elongated physique, often intermittent