noun
stage 1 (e.g., cancer)
Medical term used to describe the initial stage of a disease, especially cancer, where the condition is localized and has not spread significantly.
乳がんはステージ1で見つかれば、治る確率が高い。
If breast cancer is found at stage 1, the cure rate is high.
医者からステージ1の肺がんだと診断された。
I was diagnosed with stage 1 lung cancer by the doctor.