Metastatic lung cancer is a cancer that has spread to the lungs from other parts of the body like breast, colon, prostrate, and bladder. The cancer spreads via the bloodstream and forms a cancerous growth in the lungs. Thus a cancer that has spread to the lungs is said to have metastasized to the lungs. [...]
Types of Lung Cancer
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Small cell carcinoma accounts for 20 to 25 % of all lung cancers. This is a central lesion with early mediastinal involvement. This cell type generates an aggressive tumor with a considerable number of clients presenting a distant metastasis at the time of diagnosis. Adenocarcinoma accounts for 20 to 40 % of all lung cancer cases. This is a peripheral lesion involving the bronchi. This cell type characterizes early metastasis to the central nervous system, adrenal glands, and skeletal system. It produces few local symptoms. The squamous cell carcinoma is responsible for 30 to 32 % of all lung cancer cases. It is a central mass located in large bronchi. This cell type spreads by local invasion and is manifested by difficulty of breathing, cough, wheezing, and increased levels of calcium in the blood. Lung cell carcinoma accounts for 10 to 15 % of all lung cancer cases. This is usually a peripheral lesion bigger than adenocarcinoma and has a tendency to cavitate. This cell type also has an early metastasis.