Danielle Fishel was diagnosed with ductal carcinoma in situ (DCIS), which is a very early form of breast cancer classified as stage 0. Specifically, her diagnosis was "high-grade DCIS with micro-invasion," meaning the cancer was found in the milk ducts of her breasts and had some cells starting to invade nearby tissue. She underwent surgery and radiation treatment and is taking hormone therapy to reduce the risk of the cancer returning.
