Lambrecht W, Lierse W
Chirurgische Universitätsklinik Hamburg, Abteilung für Allgemeinchirurgie.
Z Kinderchir. 1987 Dec;42(6):350-1. doi: 10.1055/s-2008-1075619.
33 piglets with anorectal malformations were investigated histologically. 24 animals were male, 9 female. 18 piglets had high deformities with recto-urethral, respectively recto-vaginal fistulas. 15 animals had low deformities. In all animals we were able to demonstrate a sphincter internus muscle and a sphincter externus muscle. The sphincter internus muscle was localised around the fistula. These fistulas also had other characteristics of a normal anal opening.
对33只患有肛门直肠畸形的仔猪进行了组织学研究。其中24只为雄性，9只为雌性。18只仔猪患有高位畸形，分别伴有直肠尿道瘘或直肠阴道瘘。15只动物患有低位畸形。在所有动物中，我们都能观察到内括约肌和外括约肌。内括约肌位于瘘管周围。这些瘘管还具有正常肛门开口的其他特征。
