Department of Radiology, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China.
Sci Prog. 2021 Apr-Jun;104(2):368504211016214. doi: 10.1177/00368504211016214.
The study aimed to analyze morphometric assessment of the mesorectal fat thickness and its correlation with body mass index in Chinese Han population. The anterior, posterior, right lateral, and left lateral mesorectal fat thickness were measured using MRI T2-weighted images. The mean distance from the rectal wall to the mesorectal fascia were 3.8, 8.4, 11.3, and 11.7 mm in anterior, posterior, right lateral, and left lateral portion, respectively. The mesorectal area, rectal area, mesorectal fat thickness area, and rectal height were 2395.3 ± 691.1 mm, 709.6 ± 403.5 mm, 1685.7 ± 525.3 mm, and 9.1 ± 0.8 cm. BMI was found to be directly proportional to and statistically significant to the mesorectal fat area ( = 0.01). Since the mean mesorectal fat thickness was found to be <12 mm, T3d staged rectal cancer is less likely to be found in an average Chinese population that may affect the overall-survival and progression-free survival in rectal cancer patients. Anterior portion of the rectum was least thick compared to all other sides. Therefore, extra-caution should be taken in handling tumors on the anterior part of the rectum.
本研究旨在分析中国汉族人群中中直肠脂肪厚度的形态学评估及其与体重指数的相关性。采用 MRI T2 加权图像测量中直肠前、后、右、左侧脂肪厚度。直肠壁与中直肠筋膜之间的平均距离分别为前、后、右、左侧 3.8、8.4、11.3 和 11.7mm。中直肠面积、直肠面积、中直肠脂肪厚度面积和直肠高度分别为 2395.3±691.1mm、709.6±403.5mm、1685.7±525.3mm 和 9.1±0.8cm。体重指数与中直肠脂肪面积呈直接比例关系，且具有统计学意义（r=0.01）。由于中直肠脂肪厚度的平均值<12mm，在普通中国人群中不太可能发现 T3d 期直肠癌，这可能会影响直肠癌患者的总生存和无进展生存。与其他所有侧面相比，直肠前侧最薄。因此，在处理直肠前侧的肿瘤时应格外小心。
