[Human sparganosis. Report of a probable 7th case in South America and review of the subject].

A case of human Sparganosis was found in a resident of Northern Argentina, Pozo del Tigre, Province of Formosa, a zone bordering with the Republic of Paraguay, with a histopathologic diagnosis realized in the Pathologic Anatomy Institute of Asunción. In the Republic of Paraguay Dyphyllobrotium has been observed in cats, which reveals the existence of intermediaries (rats, water snakes, birds, etc.) as sources of human infection. Northern Argentina, where the patient always lived, is a geographic zone similar to the Republic of Paraguay. This case is the first described in the inland zone of the continent (and probably the seventh case in the Southamerican continent). The patient's profession, called "tropero" (cowherd), required that he had close contact with the land or a habitual exposure to nature, which does not exclude the probability of infection related to the patient's professional habitat.