论文部分内容阅读
目的:探讨肺斜裂缺损及附属裂的变异情况。方法:回顾性分析南京医科大学附属无锡第二医院2018年4—10月行胸部多层螺旋CT检查的1 450例受检者的影像学资料。男749例、女701例，年龄2～93岁，中位年龄46岁。利用多平面重建(MPR)技术将原始图像在横断面上进行重建，得到冠状面、矢状面图像。观察和分析肺斜裂的缺损情况，以及左侧水平裂、上副裂、下副裂、奇裂等常见附属裂的发生率及其他罕见附属裂变异情况。分类资料采用χn 2检验，采用McNemar检验比较左、右两侧斜裂缺损的发生率的差异性。采用Spearman相关分析判断左右侧斜裂缺损程度、同侧斜裂缺损与附属裂之间的相关性。n 结果:1 450例受检者均存在双侧斜裂，未见斜裂缺失；271例(18.69%)左侧斜裂缺损、227例(15.65%)右侧斜裂缺损，其中95例(6.62%)存在双侧斜裂缺损。不同性别、不同年龄段的左侧或右侧斜裂缺损发生率比较，差异均无统计学意义(n P值均>0.05)；1 450例受检者中左侧与右侧斜裂缺损发生率比较，差异有统计学意义(χn 2 ＝ 6.003, n P0.05). However, a statistically significant difference was observed in the incidence of the incompleteness of the oblique fissure between the left and right sides in 1450 subjects. The difference in the incidence of the incompleteness of the left and right oblique fissure in men was statistically significant (n P0.01). A positive correlation was observed between the degree of the incompleteness of the left and right oblique fissure(n rs=0.256, n P<0.01). A total of 188 cases (12.97%) of accessory fissures were noted. The incidences of left horizontal fissure, superior accessory fissure, and inferior accessory fissure in the left lung were 6.14%(89/1 450), 0.41%(6/1 450), and 0.21%(3/1 450), respectively, and the incidences of superior accessory fissure, inferior accessory fissure, and azygos fissure in the right lung were 5.38%(78/1 450), 2.14%(68/1 450), and 0.28%(4/1 450), respectively. No other accessory fissure variations were observed. A statistically significant difference was noted in the incidence of left accessory fissure in patients with and without the incompleteness of the left oblique fissure (χn 2=6.250, n P<0.05). A poor and negative correlation was observed between the incompleteness of the left oblique fissures and left accessory fissures (n rs=-0.066, n P0.05).n Conclusions:The incompleteness of oblique fissures and accessory fissure variations are common anatomical variations. The incidence of the incomplete left oblique fissure is higher than that of the right side, and a positive correlation was observed between the degree of the incompleteness of the left and right oblique fissure.