Table 3: Benefits of cancer screening from randomized clinical trials.
| Cancer | Screening test | Age range | Reduction in cancer related deaths | Improvement in overall survival |
| Breast | Mammography | 50-69 | Yes | No |
| Large bowel | Fecal Occult Blood (FOB) Flexible sygmoidoscopy |
50-80 | Yes | No |
| Lung | Low-dose CT scan | 55-75 | Yes | Yes |
| Prostate | PSA | 50-70 | Yes | No |
| Liver (hepatocellular) | Circulating Alfa Fetoprotein (AFP) Liver US | 40-70 | Yes | No |