Actress Jenna Fischer, famous for her role on the popular NBC sitcom “The Office,” has provided her fans with a surprising health update, revealing that she was diagnosed with breast cancer last fall. Fischer, 50, took to Instagram on Oct. 8 to recount her recent health struggles, sharing that she is now cancer-free after undergoing surgery, chemotherapy, and radiation.

Fischer went on to recall a picture she uploaded on Instagram in October 2023, which showed the actress preparing for a routine mammogram, an X-ray of the breasts designed to help doctors detect cancer and other tissue change. “After inconclusive results on that mammogram due to dense breast tissue, my doctor ordered a breast ultrasound,” she explained, adding that doctors discovered something in her left breast, which prompted her to have a biopsy. “Triple positive breast cancer is an aggressive form of breast cancer but it is also highly responsive to treatment,” the actress wrote.

“Luckily my cancer was caught early and it hadn’t spread into my lymph nodes or throughout the rest of my body,” she offered. “However, because of the aggressive nature of triple positive breast cancer, it still required chemotherapy and radiation to be sure it didn’t return.” Fischer began doing rounds of chemotherapy in February after undergoing a lumpectomy procedure the previous month to remove the tumor in her breast.

After completing three weeks of radiation in June, the “Mean Girls” star said she.