Primary tracheobronchial tumor
Primary tracheal and bronchial tumors originate from squamous cell carcinoma, adenocarcinoma, and papilloma of the mucosal epithelium; adenoid cystic carcinoma and mucoepidermoid carcinoma of the mucosal gland or submucosal gland; There are poorly differentiated carcinomas and carcinoids in the mucosal epithelial Agulophilic Kulchitsky cells; leiomyomas, hemangiomas, chondroma, neurofibromas, hamartomas, and carcinosarcomas originate from interstitial tissues.
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