<unk>  carcinomas are a type of cancer that looks like a mixture of carcinoma (cancer that begins in the skin or in tissues that line or cover internal organs in the body) and sarcoma (cancer of the bone, cartilage, fat, muscle, blood vessels, or other connective or supportive tissue).<unk>  carcinoma are rare, aggressive, malignant cancer and can occur in different organs such as the thyroid gland, bone, skin, breast, pancreas, liver, urinary tract, and lung.<unk>  is a group of poorly differentiated non-small cell lung carcinomas.<unk>  cancer of the lung is a rare type of malignancy and it comprises of only 0.3% to 1.3% of cases of all lung cancers. The pathogenesis of<unk>  is characterized by a rare epithelial origin, and morphologic features suggestive of a malignant mesenchymal tumor. The EGFR gene and K-ras mutations have been associated with the development of<unk> . The prevalence of<unk>  is approximately 0.4 cases per 100,000 individuals worldwide. The most common risk factor in the development of<unk>  is smoking, exposure to high levels of air pollution, asbestos, radiation therapy to the chest, radon gas, and occupational exposure to chemical carcinogens. If left untreated, the majority of patients with<unk>  may develop distant metastasis. Prognosis is generally poor, even worse than other non-small cell carcinoma of the lung. The 5-year survival rate for patients with<unk>  is 28.7%.
Sarcomatoid carcinoma of the lung
Large cell carcinoma of the lung
Adenocarcinoma of the lung
Small cell carcinoma of the lung
Mesothelioma
Squamous cell carcinoma of the lung
Non small cell lung cancer
Bronchoalveolar carcinoma