Colorectal schistosomiasis: report of three cases.

The facility for mass movement of segments of our world populations creates the need for physicians to recognize and manage diseases not seen in native patients. Such a need has occurred in New York City, where schistosomiasis, with its protean manifestations has been seen with increasing frequency. The cases of three patients who had different clinical manifestations of infestation by S. mansoni are presented. Clinical, radiologic, and pathologic features are discussed. To avoid delay in treatment, physicians must consider the possibility of this disorder in cases of patients from areas of endemic schistosomiasis.