Cases reported "Trematode Infections"

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1/4. Systemic infection with Alaria americana (trematoda).

    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.
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2/4. The first human case in mexico of conjunctivitis caused by the avian parasite, Philophthalmus lacrimosus.

    Species of Philophthalmus parasitize primarily the eyes of wild and domestic birds. A variety of mammals, including humans, occasionally serve as the intermediate as well as the definitive hosts for this parasite, although human cases are extremely rare. Here, we report a case of human conjunctivitis caused by an infection with Philophthalmus sp. in mexico. The patient was a 31-yr-old male who visited an ophthalmologist in Los Mochis, Sinaloa, mexico, because of a foreign-body sensation in his left eye for 2 mo. A small live parasite was found in the connective tissue of the bulbar conjunctiva and was removed surgically under local anesthesia under ophthalmoscopic observation. The parasite was identified morphologically as Philophthalmus lacrimosus Braun, 1902. This is the first case of human philophthalmosis in mexico and, to our knowledge, the first human case of P. lacrimosus infection in the world.
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3/4. Evidence of Haplorchis taichui infection as pathogenic parasite: three case reports.

    Haplorchis taichui is the minute intestinal fluke which parasitizes the small intestine of humans and other mammals. We present the pathology in the small intestine of 3 human cases caused by H. taichui. Microscopic examination revealed mucosal ulceration, mucosal and submucosal haemorrhages, fusion and shortening villi, chronic inflammation, and fibrosis of the submucosa. This finding clearly indicated H. taichui as pathogenic; thus prevention of infection and treatment should be paramount.
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4/4. Intestinal fluke infection as a result of eating sushi.

    Severe diarrhea in a female outpatient was caused by an intestinal fluke, identified as Heterophyes heterophyes, a natural parasite of humans and domesticated and wild fish-eating mammals. This parasite is endemic in the Orient and the middle east. A detailed case history revealed that the woman had never traveled outside the continental united states but became infected while eating raw fresh-water fish (sushi) that had been served at a local Japanese restaurant. The restaurant specialized in serving a great variety of fresh-water and salt-water fish that were flown in from the Orient and other parts of the world. The authors' findings indicate that a person does not have to travel to an endemic area to become infected with this organism.
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keywords = mammal
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