Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, Iran.
Department of Clinical Sciences, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, Iran.
Vet Med Sci. 2023 May;9(3):1149-1153. doi: 10.1002/vms3.1087. Epub 2023 Feb 1.
Migration of Ascaris lumbricoides through the papilla of Vater in humans, and entry into the biliary tree, is well-recognised. Ascaris suum and Toxocara vitulorum have been recovered from the liver of swine and buffalo. We necropsied a Persian Kurdish filly at age 6 months, weighing ∼100 kg. Death evidently was caused by oleander (Nerium oleander) intoxication. An 8-cm adult male Parascaris was found at the lobar-left hepatic bile duct junction. We suggest that the nematode entered anteriorly into the hepatic tree, via the duodenum, major duodenal papilla, bile duct, left hepatic duct and finally the lobar duct. Considering the brief 4-h elapsed time between death and necropsy, and the 18-cm distance from the major duodenal papilla to the location of the parasite, we conclude that entry into the biliary tree likely occurred ante-mortem. We advise consideration of Parascaris infection in differential diagnosis of equine hepatic and pancreatic dysfunction.
在人类中，蛔虫通过 Vater 乳头迁移并进入胆道是众所周知的。从猪和水牛的肝脏中已经回收了猪蛔虫和牛弓首蛔虫。我们对一只 6 个月大、体重约 100 公斤的波斯库尔德小马驹进行了解剖。死亡显然是由夹竹桃（Nerium oleander）中毒引起的。在叶状左侧肝胆管交界处发现了一条 8 厘米长的成年雄性副蛔虫。我们认为，这条线虫通过十二指肠、主要十二指肠乳头、胆管、左肝管，最后进入叶状胆管，从前向后进入肝树。考虑到从死亡到剖检之间仅过去了 4 小时，而寄生虫所在位置与主要十二指肠乳头之间的距离为 18 厘米，我们得出结论，进入胆道很可能是在生前发生的。我们建议在鉴别诊断马属动物的肝和胰腺功能障碍时，考虑副蛔虫感染的可能性。
