Shannen Doherty's Breast Cancer Spreads to Brain.

Actress Shannen Doherty revealed on Instagram that her breast cancer has metastasized to her brain. She shared a video of herself getting fitted for the mask she has to wear during radiation treatment, and shared footage of herself from her first round of radiation on January 12. Doherty was diagnosed with breast cancer in 2015, and after undergoing a mastectomy, chemotherapy, and radiation treatment, she announced in 2017 that her cancer had gone into remission. However, in 2020, she revealed that the cancer had returned, spread, and was stage 4.