Head and neck neoplasms: radical surgery - preoperative evaluation.
D000367:Age Factors; D000402:Airway Obstruction / Q000150:complications; D002318:Cardiovascular Diseases / Q000150:complications; D002560:Cerebrovascular Circulation; D048909:Diabetes Complications; D006258:Head and Neck Neoplasms / Q000601:surgery*; D006801:Humans; D008171:Lung Diseases / Q000150:complications; D014552:Urinary Tract Infections / Q000150:complications