The 45-year-old "Beverly Hills, 90210" star, who recently opened up about her fight against cancer and her emotional journey as she undergoes the treatment, said it has spread to her lymph nodes, reported Entertainment Tonight.
"I had breast cancer that spread to the lymph nodes, and from one of my surgeries we discovered that some of the cancer cells might have actually gone out of the lymph nodes.
"So for that reason, we are doing chemo, and then after chemo, I'll do radiation," Doherty said.
She also fears her treatment's after effects.