Abstract
A 38-year-old man born in Formosa, was hospitalized for treatment of dysentery. In spite of antibiotic administration diarrhea persisted. At admission red blood cell count was 500×104/mm3, hemoglobin was 14.4 gr./dl, and white blood cell count was 47, 500/mm3, showing an increase in white blood cell count. Differential count showed 46% of abnormal T cells with a convoluted or a lobulated nuleus. X-ray findings suggested the presence of ulcer with edema in the small and the large intestinal mucosas. Colonof iberscopic findings showed mainly opaque edematous mucosa with multiple ulcers and reddenings, and scattered pseudopolypoid lesions or small ele-vations. Biopsied specimens showed the infiltration of the abnormal T cells with a convoluted or a lobulated nucleus which were the same as those found in peripheral blood, suggesting the infiltration of ATL cells into the colonic mucosa.
