Fernandes B J, Cooper J D, Cullen J B, Freeman R S, Ritchie A C, Scott A A, Stuart P F
Can Med Assoc J. 1976 Dec 4;115(11):1111-4.
Alaria americana is a trematode, the adult of which is found in mammalian carnivores. The first case of disseminated human infection by the mesocercarial stage of this worm occurred in a 24-year-old man. The infection possibly was acquired by the eating of inadequately cooked frogs, which are intermediate hosts of the worm. The diagnosis was made during life by lung biopsy and confirmed at autopsy. The mesocercariae were present in the stomach wall, lymph nodes, liver, myocardium, pancreas and surrounding adipose tissue, spleen, kidney, lungs, brain and spinal cord. There was no host reaction to the parasites. Granulomas were present in the stomach wall, lymph nodes and liver, but the worms were not identified in them. Hypersensitivity vasculitis and a bleeding diathesis due to disseminated intravascular coagulation and a circulating anticoagulant caused his death 8 days after the onset of his illness.
美洲艾氏吸虫是一种吸虫，其成虫寄生于哺乳动物食肉动物体内。首例由该虫中尾蚴阶段引起的播散性人体感染发生在一名24岁男性身上。感染可能是由于食用了未充分煮熟的青蛙所致，青蛙是该虫的中间宿主。生前通过肺活检做出诊断，并在尸检时得到证实。中尾蚴存在于胃壁、淋巴结、肝脏、心肌、胰腺及周围脂肪组织、脾脏、肾脏、肺、脑和脊髓中。宿主对寄生虫没有反应。胃壁、淋巴结和肝脏中有肉芽肿，但未在其中发现虫体。由于弥散性血管内凝血和循环抗凝物质导致的超敏性血管炎和出血素质在其发病8天后导致死亡。
