Detecting and diagnosing cancer early is vital for successful treatment and improved survival rates. Modern techniques like MRI, CT, and PET scans allow doctors to identify abnormalities at very early stages. Non-invasive methods, such as liquid biopsies, are gaining prominence by detecting cancer biomarkers in blood samples. Artificial intelligence is also making strides in cancer care, offering deeper insights by analyzing imaging and genetic data with exceptional accuracy. These innovations enable tailored treatment plans, enhancing the effectiveness of therapies. Ongoing research continues to drive progress, offering hope for more precise and accessible cancer diagnosis worldwide.