The radiological appearance of 12 cases with villous adenoma of the large bowelby the double-contrastbarium enema were analysed and reported.The radiological features of the villousadenomas vere observed on thesurface of tumors
such as uneven reticular or granular patern
there were lobulated or carse and ill-definedmaregin of the tumor
The teatures which has high rate of malignant changes and high incidence of thesynchronous or metachronous colonic tumors in patients wth this lesions were demonstrated in ourseries
Ffinally the x-ray appearance of malignant changes of the villous adenomawere discussed.