The former Beverly Hills, 90210 and Charmed star's health crisis was revealed in legal papers she filed earlier this week (beg17Aug15), in which she accused her fired managers of ignoring a medical insurance bill that cost her her coverage last year (14).

As a result, the actress missed a handful of doctor check-ups and when she eventually got an appointment - when her coverage returned - she was diagnosed with cancer and told by doctors she could have prevented the spread of the disease if she'd had a routine check-up last year.

In a statement, the 44 year old says, "Yes, I have breast cancer, and I am currently undergoing treatment. I am continuing to eat right, exercise and stay very positive about my life."

She adds, "I am thankful to my family, friends and doctors for their support and, of course, my fans who have stood by me."

In her lawsuit, Doherty reveals she may need a treatment of chemotherapy and a mastectomy. She claims she is unable to work because of her illness.