Princess Catherine undergoing preventive chemotherapy after cancer diagnosis

Princess Catherine of Wales, formerly Kate Middleton, is undergoing preventive chemotherapy after a cancer diagnosis following abdominal surgery in January. Preventive chemotherapy, known as adjuvant chemotherapy, aims to permanently cure early-stage cancer before relapse. Medical imaging may not detect all cancer cells, making preventive chemotherapy crucial. Decisions on treatment are based on risk calculations. Preventive chemotherapy may not guarantee a cancer-free outcome due to potential treatment-resistant cells. Patients can opt out based on risk assessment.