leading causes of ovarian cancer
Ovarian cancer - Causes. Causes of ovarian cancer. Several possible causes of ovarian cancer have been identified, along with risks that may make developing the condition more likely. Cancer begins with a change (mutation) in the structure of the DNA in cells, which can affect how they grow. This means that cells grow and reproduce uncontrollably, producing a lump of tissue called a tumour. In ovarian cancer, cells in the ovary start to change and grow abnormally.