Dr Sithembile Ngidi educates us on the risk stratifying system of prostate cancer. Once a patient has been diagnosed and the tumour biological behaviour (personality) has been identified, treatment modalities are chosen, based on what risk profile the cancer falls into.  Parameters, such as prostate-specific antigen (PSA) level, Gleason score and T-staging, determine the risk profile. Other factors considered are patient choice, lifestyle, medical co-morbidities, risks and benefits, and life expectancy. I tell my patients to think of the risk profiles as dogs. Low-risk being your small friendly dogs, like a Chihuahua, which further divides into very low-risk and…