Department of Anatomy, Division of Basic Medical Science, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan.
Tokai J Exp Clin Med. 2020 Dec 20;45(4):162-169.
We reported three cases of fetuses with abnormal intestinal anatomy found during our recent study of the transverse mesocolon using 20 late-stage fetuses.
The first case (CRL: 328 mm) appeared to have a duodenum and transverse colon trapped in Winslow's foramen (foramen epiploicum) and the duodenum superior portion elongated rightward. The second case (CRL: 264 mm) had a transverse colon inserted deeply into a space between the right kidney and duodenum. The third case (CRL: 276 mm) had a descending colon that ran inferiorly through a deep space between the left kidney and duodenum. Each case had a greater omentum that was shifted leftward, but this is usual. These 3 abnormalities were not evident in the anterior view during dissection of the liver, stomach, jejunum, and ileum. With underdeveloped pancreatic ducts due to unknown reason other than the internal hernia, the first case seemed to be fatal after birth. However, the second and third cases could have recovered after birth because there was no evidence of definite malrotation and because of loose attachments of the intestines to surrounding structures.
The intestinal morphologies described here could cause some sort of symptoms, such as abdominal pain, whose cause might be difficult to determine.
我们报道了三例在最近使用 20 例晚期胎儿研究横结肠系膜时发现的胎儿肠道解剖结构异常的病例。
第一例（CRL：328mm）似乎有十二指肠和横结肠被困在 Winslow 孔（网膜孔）中，十二指肠上段向右伸长。第二例（CRL：264mm）横结肠深深地插入右肾和十二指肠之间的空间。第三例（CRL：276mm）降结肠向下穿过左肾和十二指肠之间的深空间。每个病例都有一个向左移位的大网膜，但这是常见的。在肝脏、胃、空肠和回肠的解剖过程中，这些 3 种异常在前方视图中并不明显。由于除了内疝之外的未知原因，胰腺导管发育不良，第一例病例出生后似乎是致命的。然而，第二例和第三例病例出生后可能会恢复，因为没有明确的旋转不良的证据，而且肠与周围结构的连接较松。
这里描述的肠道形态可能会引起一些症状，如腹痛，其原因可能难以确定。
