DeVilbiss Bethany, Ziegler Jessie, Righter Daniel, Allen Andrew, Barrington George, Haldorson Gary
Department of Veterinary Clinical Sciences, Washington State University, Pullman, Washington 99164, USA.
J Zoo Wildl Med. 2011 Sep;42(3):513-7. doi: 10.1638/2010-0208.1.
A 2-yr-old male intact alpaca (Vicugna pacos) was admitted for a 4-day history of anorexia and colic. Five months prior, the alpaca had undergone surgical removal of a duodenal trichophytobezoar and had recovered uneventfully. The alpaca died under anesthesia, and diaphragmatic herniation of the third gastric compartment (C3) was diagnosed at necropsy. A defect was identified in the left dorsal hemidiaphragm accompanied by herniation of 80% of C3 and the aboral portion of the second gastric compartment into the pericardial sac. The smooth margins and dorsal location of the diaphragmatic defect suggested a congenital origin. Diaphragmatic herniation is uncommon in camelids, and only one other case has been reported. Due to the dorsal location of the diaphragmatic defect in this animal, positioning during the previous surgery may have initiated a partial entrapment of gastric compartments, leading to a more complete incarceration between when the animal was discharged and presented again.
一只2岁的雄性未阉割羊驼（小羊驼）因4天的厌食和绞痛病史入院。5个月前，这只羊驼接受了十二指肠毛球虫性胃石的手术切除，术后恢复顺利。这只羊驼在麻醉下死亡，尸检诊断为第三胃室（C3）膈疝。在左半膈肌背侧发现一个缺损，伴有80%的C3和第二胃室口侧部分疝入心包囊。膈肌缺损边缘光滑且位于背侧，提示为先天性起源。膈疝在骆驼科动物中并不常见，此前仅报道过一例。由于该动物膈肌缺损位于背侧，上次手术时的体位可能引发了胃室的部分嵌顿，导致在动物出院至再次就诊期间发生更完全的嵌闭。
