Schistosoma Mansoni (3 of 9)

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added:
13 years ago
views:
3275
specialty:
Gastroenterology

Case description

The eggs, which are highly antigenic and can induce an intense granulomatous response, migrate through the bowel or bladder wall to be shed via feces or urine. During this time (approximately 10 d) they begin to mature into miracidia. Eggs that are not shed successfully may remain in the tissues or be swept back to the portal circulation (from the mesenteric vessels) or to the pulmonary circulation (from the vesicular vessels via the inferior vena cava [IVC]) The free-swimming miracidia that are shed into freshwater survive 2-3 weeks, during which time they must infect a susceptible snail to complete the life cycle. Within the infected snail, 2 generations of sporocysts multiply, mature into free-swimming cercariae, and exit the snail to seek a human host and begin a new cycle.

tags: Schistosoma Mansoni magnifying colonoscopy caecum

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