selenium(suh-LEE-nee-um) A mineral that is needed by the body to stay healthy. It is being studied in the prevention and treatment of some types of cancer.
silica(SILL-uh-kuh): A substance found in rocks, sand, and quartz as well as some workplaces.
small cell lung cancerAn aggressive (fast-growing) cancer that forms in tissues of the lung and can spread to other parts of the body.
sputum(SPYOO-tum) Mucus and other matter brought up from the lungs by coughing.
sputum cytology(SPYOO-tum sy-TAH-loh-jee) Examination under a microscope of cells found in sputum (mucus and other matter brought up from the lungs by coughing).
squamous cell carcinoma(SKWAY-mus sel KAR-sih-NOH-muh) Cancer that begins in squamous cells, which are thin, flat cells that look like fish scales.
StageThe extent of a cancer in the body. Staging is usually based on the size of the tumor, whether lymph nodes contain cancer, and whether the cancer has…