Class	Prevalence (%)	Subtypes
Adenocarcinoma	40	Acinar, bronchioalveolar, papillary, solid carcinoma with mucus formation, mixed
Squamous cell carcinoma	25	—
Small cell carcinoma	20	Pure small cell carcinoma, combined small cell carcinoma
Large cell carcinoma	10	Large cell neuroendocrine, basaloid, lymphoepithelial-like, large cell with rhabdoid phenotype
Adenosquamous carcinoma	< 5	—
Carcinoid	< 5	—
Bronchial gland carcinoma	< 5	—