<unk>  is a type of rare lung tumour under the category of poorly differentiated Non-small-cell lung carcinoma (NSCLC). Based on its histological characteristics, it can be classified into giant cell carcinoma (almost completely consists of giant cells), spindle cell carcinoma (almost completely consists of spindle cells), pleomorphic carcinoma (at least 10% spindle/giant cells or consists of giant and spindle cells only), carcinosarcoma (mix of NSCLC and true sarcoma), and biphasic pulmonary blastoma (consists of embryonal type epithelial element and primitive mesenchymal stroma).
Sarcomatoid carcinoma
Adenomatoid tumor
Spindle cell carcinoma
Mucinous carcinoma
Basal-like carcinoma
Anaplastic carcinoma
Verrucous carcinoma
Epithelioma