History and Risk Factors, Version 3.1 Training. Sequence 15438, e-cigarette use, seeks to capture if the patient uses or has used electronic cigarettes on arrival to this facility. Electronic cigarettes are battery-operated devices that heat a liquid containing nicotine, propylene glycol, and or vegetable glycerin and flavorant chemicals to generate an aerosol that the user inhales. Because e-cigarettes do not burn tobacco, they do not produce tobacco smoke. Sequence 15437, treatment, seeks to capture if the patient has received chemotherapy, immunotherapy, hormone therapy, or radiation therapy for cancer treatment between five years prior to arrival and arrival at this facility. Chemotherapy is the treatment of disease using chemical agents or drugs that are selectively toxic to the causative agent of the disease, such as a virus, bacterium, or other microorganisms. Hormone therapy is used to prevent or delay recurrence of cancer after other modalities of treatment have removed the gross primary tumor and chemotherapy or radiation therapy have treated systemic and regional micrometastases. Immunotherapy uses substances to stimulate or suppress the immune system to help the body fight cancer. Three types of immunotherapy used to treat cancer are nonspecific immune stimulation, T-cell transfer therapy, and immune checkpoint inhibitors. Radiation uses x-rays, gamma rays, and other sources of radiation to destroy cancer cells.

electronic cigarette use

cancer treatment

chemotherapy

immunotherapy

radiation therapy