Aerodigestive cancer is a field of academic and clinical research focused on the comprehensive study of malignant neoplasms arising within the interconnected anatomical regions of the upper aerodigestive tract, including the oral cavity, pharynx, larynx, esophagus, trachea, and bronchi. This research investigates the shared etiology, molecular biology, patterns of multifocal disease, diagnostic approaches, and integrated therapeutic strategies relevant to cancers across these sites, recognizing their common risk factors and the clinical significance of synchronous and metachronous primary tumors.