Abstract
Ten cases of Schistosomiasis Japonicum (SJ) with colonic lesions were experienced. All of them are patient from Kofu basin which is known as prevalent area of the disease. The distribution of the lesions was as the following : diffuse (total colitis 2, proctosigmoiditis 3) 5 cases, segmental sigmoiditis 2 cases, patchy proctitis 2 cases and mixed type 1 cases. Abdominal ultrasonography revealed liver fibrosis typical for SJ in seven among nine. Colonoscopy showed that the following findings were typical for SJ : (1) atrophic and smooth mucosa, (2) irregular yellow fleck which coincided the nest of eggs. (3) abnormal vascular pattern (4) teleangiectatic spots. Barium enema were performed for 5 patients. Two were diffuse total colitis, two were segmental colitis and one was mixed type. Diffuse lesions were very similar to that of ulcerative colitis in remission. The lack of episodes of bloody diarrhea and the existence of irregular yellow spots in case of SJ were the main differentrating points between the two conditions.
