In which of the following disease, the overall survival is increased by screening procedure?
Prostate cancer
Lung cancer
Colon cancer
Ovarian cancer
Randomized controlled trials of faecal occult blood screening for carcinoma colon have shown a reduced number of deaths by 15-33% in the screened group i.e. increased survival by 15-33%. Ref: Kirk's Manual of Clinical Surgery, Pages 424-426; Harrison's Internal Medicine, 16th Edition, Page 26