'Overused' health test given to millions each year linked to startling explosion in cancers

A medical test used to detect cancer may actually be contributing to the disease, research suggests. However, the new research published this week estimated 'CT-associated cancer could eventually account for five percent of all new cancer diagnoses annually.' CT scans are used to diagnose and monitor cancers and bone injuries The above graph shows the number of CT scans performed in millions and the incidence of cancer per 1,000 CT scans However, experts say they are sometimes overprescribed and performed unnecessarily, potentially because of the money-making opportunities for the hospitals, as the tests are very expensive, or out of doctors' fears of missing a diagnosis and being sued. The highest number of projected cancer cases in adults was linked to CT scans of the abdomen and pelvis, followed closely by chest CTs. The above graph shows the projected number of CT-induced cancers by body region exposed to the scan in adults The above graph shows the projected number of CT-induced cancers by body region exposed to the scan in kids In Dr Smith-Bindman's new research, the team found the three most common cancers observed in exposed patients were lung cancer - 22,400 cases - colon cancer - 8,700 cases- and leukemia - 7,900 cases.