Lung cancer, a malignant neoplasm, arises from uncontrolled cell growth in lung tissues, categorized into non-small cell lung cancer (NSCLC) and small cell lung cancer (SCLC). NSCLC includes adenocarcinoma, squamous cell carcinoma, and large cell carcinoma. Tobacco smoking, carcinogen exposure, and genetic factors contribute to its development. Lung cancer, often referred to as the "silent intruder," can quietly advance before showing noticeable symptoms. Understanding the signs, seeking timely diagnosis, and exploring treatment options are crucial steps in confronting this challenging condition.