Surgery of extensive malignant neoplasms of the upper digestive and respiratory systems.
D004063:Digestion; D004067:Digestive System Neoplasms; D041981:Gastrointestinal Tract; D009369:Neoplasms; D012137:Respiratory System; D012142:Respiratory Tract Neoplasms
GASTROINTESTINAL SYSTEM/neoplasms; RESPIRATORY TRACT/neoplasms