Bing found the following results
What Is Cancer? - NCI - National Cancer Institute
Cancer - Symptoms and causes - Mayo Clinic
Cancer - World Health Organization (WHO)
Cancer - Wikipedia
What is Cancer? | Cancer Basics | American Cancer Society
Comprehensive Cancer Information - NCI
Cancer: Types, Causes, Treatment, and Prevention - Healthline
All About Cancer | American Cancer Society
Information and Resources about Cancer: Breast, Colon, Lung, …
Understanding Cancer - NCI