原发性气管内肿瘤指原发于气管内的良性及恶性肿瘤,由附近器官或组织的肿瘤累及或转移到气管者不包括在内.此病较为少见,1968年美国死于支气管肺癌者59,000人,死于喉癌者2,800人,死于气管内恶性肿瘤者131人.原发性气管内肿瘤多无明显体征,不易被一般放射线检查所发现,故在 Primary intratracheal tumors are benign and malignant tumors that originate in the trachea and are not involved in the involvement or transfer of tumours from nearby organs or tissues to the trachea. The disease is relatively rare and in the United States 59,000 died of bronchial lung cancer in 1968. There were 2,800 people who died of laryngeal cancer and 131 people died from intratracheal malignancy. There were no obvious signs of primary tracheal tumors and they were not easily detected by general radiographic examination.