Abstract：Objective: Combining general anatomy to investigate the multiple-detector spiral CT(MDCT) manifestations of the normal transverse mesocolon. Materials and Methods: ①CT scan were performed in 41 consecutive patients. Emphasis was placed on the following findings: manifestation of major mesenteric vessels in the transverse mesocolon; location of the transverse mesocolon; fat within the transverse mesocolon; lymph nodes of the transverse mesocolon; the best manifestation level. ②To observe normal transverse mesocolon in 6 patients who had gastric surgery and get emphasis, the following data as: the location of the mesenteric vessels in the transverse mesocolon; the right origin of the transverse mesocolon were noticed. The data of patients’ age and sex were obtained. Results: ①The revealing rate of middle colic artery was 93.0%(38/41), the middle colic vein was 85%(35/41), the gastrocolic trunk was 100%(41/41). On axial MDCT images, the transverse mesocolon appeared as the vessels on the level of the transverse colon under the gastric-colic ligament. It appeared as the vessel net behind the gastro-colic ligament if the transverse mesocolon was oblique, and on the sagittal scans, it appeared as the transverse vessels behind the transverse colic ligament. The attenuation of fat located within the transverse mesocolon was homogenous, the transverse mesocolon was located in the upper and middle abdomen. Eighteen cases showed the small bowel upon the midportion of transverse colon. In 3(7.0%) cases, the normal lymph nodes were revealed in the root of the transverse mesocolon. ②Through general anatomy, pancreas was located in the middle of the two layers of the transverse mesocolon, and the vessels were located on the posterior layer. Conclusion: MDCT can demonstrate the details of the transverse mesocolon.
2008, Vol. 19 
