Modern medicine is increasing our lifespan. But as we survive diseases and live longer, more of us are succumbing to cancer.
By measuring a cancer cell's DNA in the bloodstream, scientists can get a snapshot of the cancer itself, which is referred as a "liquid biopsy".
Computer-aided decision-making has been shown to help in clinical contexts. But winning over doctors and patients is a different matter.
A new research paper has found some cancers aren't picked up by GPs in the first or second appointments, but it's because cancer is usually an unlikely explanation for a patient's symptoms.