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INFECTIONS with the trematode worm, Schistosoma mansoni, have frequently been encountered among the large group of native-born Puerto Ricans now residing in New York City.1 As part of a study of this disease, we endeavored to determine the value of the examination of biopsied fragments of rectal mucosa in diagnosis and as a guide to treatment. This report deals with our observations in 106 cases.The use of a rectal biopsy for the diagnosis of schistosomiasis was first suggested in 1942 by Ottolina and Atencio2 after a study of post-mortem material. By digesting various tissues with caustic potash and . . .
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Spingarn et al. (1957) studied this question.
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