Tracheal massesFor a single mass consider:1. Neoplasmssquamous
cell carcinoma: most common primary tracheal malignancy2~50
%adenoid cystic carcinoma (ACC): 2ndcommonest primary tracheal
malignancysquamous cell papillomaadenocarcinomaFor a single mass
consider:Neoplasmsbronchialcarcinoid (if involves
trachea)mucoepidermoid carcinomachondrosarcomatracheal
leiomyosarcoma: raretracheal leiomyomaendobronchial hamartoma: (if
involves trachea)tracheal lipoma4: rareFor a single mass
consider:2. Non neoplastic lesionstuberculosisinflammatory
fibro-epithelial polyp
2. For multiple masses consider:laryngo-tracheal
papillomatosistracheobronchial amyloidosismultifocal neoplasm
