Which type of lung cancer is the least common form of lung cancer,but it is the most deadly because it easily metastasizes to other tissues?

Question

Quizplus · Accepted Answer

Squamous cell carcinoma originates in the bronchial epithelium. In this form of lung cancer, the ciliated epithelium undergoes metaplasia first, changing to stratified epithelial tissue. Cancerous cells further divide, invading tissues of the bronchial walls and forming tumors that can block airways. Adenocarcinoma originates in the mucous glands of the bronchial tree in the lung. Like squamous cell carcinoma, it also invades other tissues of the bronchial tree and lung. Oat cell carcinoma is the least common form of lung cancer, but it is the most deadly because it easily metastasizes to other tissues. It usually begins in a main bronchus and then invades the mediastinum and travels to other organs.

Which Type of Lung Cancer Is the Least Common Form