A surgically created opening from an area inside the body to the outside. Colostomy and urostomy are types of stomas. Also called an ostomy. Treatment given to prevent, control, or relieve complications and side effects and to improve the person's comfort and quality of life. An abnormal mass of tissue that results from excessive cell division.
Tumors perform no useful body function.
High-energy radiation used in low doses to diagnose diseases and in high doses to treat cancer.