How dangerous are ovarian cancers?

< 15% are detected. In early stage; few stage iii patients are cured, so this is a very serious disease in most of those diagnosed.
Frequently fatal. The ovaries can have cancer for a long time before symptoms are felt. They are small organs and not readily felt on a routine abdominal exam. Frequently the initial diagnosis is made after the cancer has already spread outside of the ovary. Distant spread of the cancer makes it harder to cure with surgery and radiation. This is why there is such a high rate of fatality frm this condition.