Jane Fonda diagnosed with cancer

Jane had been diagnosed with non-Hodgkin's Lymphoma

The 84-year-old shared her health condition on social media

Non-Hodgkin lymphoma is a cancer that is related to white blood cells

This cancer directly affects immune body's system

Award-winning US actress has begun treatment to fight cancer

She had begun a 6-month course of chemotherapy treatment

The 84-year-old Oscar winner said, "This is a very treatable cancer

Fonda said 80% of people survive in this cancer, so I feel very lucky"