在妊娠早中期，通过常规超声可观察到胎儿乙状结肠系膜。

Fetal sigmoid colon mesentery made visible by routine ultrasound in the first and second trimester of pregnancy.

作者信息

Wozniak Slawomir, Zazga Maria, Kurc-Darak Bozena, Tomialowicz Marek, Paulsen Friedrich, Florjanski Jerzy

机构信息

Department of Human Morphology and Embryology, Division of Anatomy, Wroclaw Medical University, Chalubinskiego 6a, 50-368 Wroclaw, Poland.

STN (Students Scientific Society) ANATOMIA-KLINIKA-NAUKA, Wroclaw Medical University, Department of Human Morphology and Embryology, Division of Anatomy, Chalubinskiego 6a, 50-368 Wroclaw, Poland.

出版信息

Ann Anat. 2021 May;235:151676. doi: 10.1016/j.aanat.2021.151676. Epub 2021 Jan 27.

DOI:10.1016/j.aanat.2021.151676

PMID:33515692

Abstract

BACKGROUND

Ultrasound is a routine procedure performed during pregnancy to monitor the status of the human fetus, including the development of the digestive tract. The aim of this publication was to determine the shape of the fetal sigmoid colon mesentery during the first and second trimester of pregnancy by means of ultrasound.

METHODS

The study was performed in 45 pregnant women (age: 36.4 years on average, range 25-45) during a routine ultrasound examination. The fetuses were between 12 and 22 weeks of pregnancy. The shape of the fetal sigmoid colon mesentery was analyzed.

RESULTS

We visualized the triangular shape of the mesentery in all 45 cases. A prevalence of scalene or isosceles acute triangles was found in both trimesters. At the 12-13 weeks we observed 5 different forms of mesenteric triangles - the scalene or isosceles acute triangles appeared at 33.3% and 28.6%, respectively. The obtuse scalene was present in 23.8 %. In the 2nd trimester (20-22 weeks) 4 types were found, among them 37.5 % acute scalene and 33.3 % acute isosceles.

CONCLUSIONS

The fetal sigmoid colon mesentery can be visualized from the 12th week of pregnancy. The triangular shape of the sigmoid colon mesentery is easy to follow during routine ultrasound examinations.

摘要

背景

超声是孕期进行的一项常规检查，用于监测人类胎儿的状况，包括消化道的发育情况。本出版物的目的是通过超声确定妊娠早、中期胎儿乙状结肠系膜的形态。

方法

在45名孕妇（平均年龄36.4岁，范围25 - 45岁）的常规超声检查中进行了该研究。胎儿处于妊娠12至22周。分析了胎儿乙状结肠系膜的形态。

结果

在所有45例病例中，我们均观察到系膜呈三角形。在两个孕期中均发现斜角或等腰锐角三角形占多数。在12 - 13周时，我们观察到5种不同形式的系膜三角形——斜角或等腰锐角三角形分别占33.3%和28.6%。钝角斜角三角形占23.8%。在孕中期（20 - 22周）发现了4种类型，其中37.5%为锐角斜角形，33.3%为锐角等腰形。