The early detection of cancer is critical for successful treatment, but it has several limitations. Many cancers do not present symptoms in the early stages, making it challenging to detect them before they progress. Additionally, current screening methods, such as mammograms and colonoscopies, can sometimes produce false positives or false negatives, leading to unnecessary anxiety or missed diagnoses. Advanced imaging techniques and biomarkers are being researched, but they are not yet foolproof or widely available.
