[Urinary bilharziasis in Spain (a case in León)].

The authors draw attention to the potential danger of urinary schistosomiasis in Spain, pointing out the nuclei in the country which present snails suitable for being intermediary carriers. They present one case, not autochthonous, observed in León and they point out the possible increase in this parasitosis, due to the increase in immigration and tourism, with the possible infesting of the aboriginal snails and the resulting formation of endemic areas in the said nuclei. In view of the precarious Spanish, urological literature on the subject, a study is made of the illness and the parasitic cycle.