Lung cancer is a malignant pulmonary neoplasm characterized by uncontrolled cellular proliferation within the lung tissues, often leading to local invasion and distant metastasis. As a significant academic and research concept, it encompasses the comprehensive study of its etiology, molecular pathogenesis, diverse histological subtypes (e.g., non-small cell and small cell lung cancer), genetic drivers (e.g., EGFR, ALK mutations), epigenetic alterations, tumor microenvironment interactions, clinical manifestations, diagnostic methodologies (e.g., imaging, biopsy, molecular profiling), staging systems, prognostic indicators, and the development and evaluation of therapeutic strategies, including surgery, radiation, chemotherapy, targeted therapies, and immunotherapy, aiming to improve prevention, early detection, and treatment outcomes for this globally prevalent and often fatal disease.