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Longevity of Schistosoma Mansoni: Observations Based on a Case¹

A case of Schistosoma mansoni infestation is reported in a 32 year old Puerto Rican woman, who had been out of the endemic area and a resident of New York City for 26 years. Evidence was adduced that this patient had living adult flukes in her body alive at least 26 years an extension of the known life span of this parasite.

Review of the literature reveals that S. hematobium has been known to have an equal longevity and that the same has been reported with S. japonicum but not as well as can be determined, ever before with S. mansoni.

The association of polypoid schistosome granuloma with possible malignant transformation is again noted.

¹ From the Second Medical Service of the Mount Sinai Hospital, Fifth Ave. and One Hundredth St., New York 29, N. Y.