Small cell lung cancer and non-small cell lung cancer are both types of primary bronchogenic carcinoma, differing only in their cellular morphology. They also differ in clinical symptoms and characteristics of metastasis. Small cell lung cancer is more prone to metastasis clinically, including strenuous and distant spread, such as to the brain and liver. The medications used for each are also different; small cell lung cancer typically involves chemotherapy drugs like etoposide and cisplatin, whereas non-small cell lung cancer commonly uses drugs like paclitaxel and platinum-based drugs.