Dr. Harsh Vardhan Puri, a leading expert in lung cancer treatment, explains that early detection of Stage 1 lung cancer can be challenging, as symptoms are often subtle or absent. However, signs such as persistent coughing, shortness of breath, chest pain, or unexplained weight loss may occur. A timely chest X-ray or CT scan can help identify abnormalities. Regular screenings are crucial, especially for high-risk individuals like smokers, to detect Stage 1 lung cancer early and improve treatment outcomes.