目的　研究横结肠系膜腹膜下间隙与肾旁前间隙的通连关系。　方法　对4具尸体标本进行肾旁前间隙乳胶灌注，然后进行尸体标本CT扫描，并制作断面标本。将CT图像及断面标本进行对照观察，记录灌注剂在肾旁前间隙和横结肠腹膜下间隙内的弥散情况。　结果　4具尸体标本中横结肠系膜腹膜下间隙内的灌注剂包绕横结肠系膜血管，向右至横结肠系膜腹膜下间隙右侧体部和/或系膜缘，未超过结肠肝曲；向左分布于横结肠系膜腹膜下间隙左份，均未到达边缘部；灌注剂向下至小肠系膜根部。　结论　横结肠系膜腹膜下间隙与肾旁前间隙通连，通过标本间隙内灌注后行断面标本制作和灌注标本CT扫描图像可以良好的显示二者的通连关系。

Objective　To study the communication between the subperitoneal space of the transverse mesocolon (SpST) and the anterior pararenal space.　Methods　Four cadavers (including 3 males, 1 female) were carried out latex injection into the anterior pararenal space, and then undergo CT scanning. After that, sectional specimens (including the transverse and sagittal sections) were performed. The data of CT images, sectional specimens, and the latex diffusion extent in SpST and anterior pararenal space were observed and analyzed.　Results　The latex perfused into the SpST, and encased the middle colonic vessels. In the right portion of SpST, latex got to the body or/and verge of the SpST, while, int the left portion of SpST, latex only diffused to the body, with no reaching to the verge.　Conclusions　SpST communicates with the anterior pararenal space. The relation between SpST and anterior pararenal space can be showed clearly through the latex injection and CT scan.