RESEARCH NOTE - Colon Polyps in Schistosoma haematobium Schistosomiasis

Colon polyps are not usual in schistosomiasis. The described cases are associated to mansonic schistosomiasis and rarely to Schistosoma heamatobium infection.. The most common clinical manifestations of S. haematobium are in the urinary tract causing haematuria and renal failure in chronic infection. However, eventually, intestinal clinical signs may appear as first manifestation of the disease. Egypt is the country where most reports of colon polyps were published. In other African countries where S. haematobium are endemic severe intestinal involvement is not frequent. In Egypt there are distinct areas where either S. mansoni or S. haematobium is predominant. In Angola, in the northern part of the country where the patient comes from, S. haematobium predominates. In Brazil, schistosomiasis is due to S. mansoni with no autoctones cases of S. haematobium described. The intermediate host for S. mansoni is the Biomphalaria sp. and for S. haematobium the Bulinus sp. In Brazil bulinid snails have not been found