Concerns about the Dil Se star's health were raised last week (ends30Nov12) when she was admitted to a hospital in Mumbai, India for medical tests.
She has since confirmed her cancer news to fans in a post on her Facebook.com page, but Koirala is confident she will make a full recovery from the disease.
She writes, ""Dear friends, thank you for all your wishes. I am in good place and in good hands. With all your love and prayers I am sure I'll recover. It was shocking to know, but then life is full of surprises.
""One must deal with it and move on with faith and dignity. Whatever is the outcome, it is for best. I know that. So people, don't worry! I have had a beautiful life so far and I know, whatever will happen will all be good. Thank you from the bottom of my heart for your prayers.""
The 42 year old is reportedly scheduled to undergo surgery in New York on Monday (10Dec12).