Lung cancer

{
  "id": "MLC-T-ENV-016201",
  "term": "Lung cancer",
  "field": "Environment",
  "term_source": "Lung Cancer",
  "definition": "1. A carcinoma originating in the lung. Lung carcinomas usually arise from the epithelium that lines the bronchial tree (bronchogenic carcinomas), and are classified as small cell or non-small cell carcinomas. Non-small cell lung carcinomas are usually adenocarcinomas, squamous cell carcinomas, or large cell carcinomas. Metastatic carcinomas to the lung are also common, and can be difficult to distinguish from primary tumors.\n\n2. Cancer that forms in tissues of the lung, usually in the cells lining air passages. The two main types are small cell lung cancer and non-small cell lung cancer. These types are diagnosed based on how the cells look under a microscope.",
  "subject": "Biological substances",
  "references": [
    "National Cancer Institute Thesaurus",
    "National Cancer Institute Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/lung-cancer/"
}