In which of the following disease, the overall survival is increased by screening procedure -

.there is strong positive correlation between cancer colon and dietary fat.the studies have shown that increase in the dietary intake of fat has recently increased the incidence of ca colon in the western communities like japan.also dietary fibre intake is said to have a protective role in the development of carcinoma colon.the overall survival is increased by screening procedure - in the case of carcinoma colon. ref:park&;s textbook,22 nd ed,pg 600