Final answer:
Breast cancer is the most common cancer diagnosis in women. It causes abnormal growth of cells in the breast, forming a tumor. Early detection is crucial for successful treatment.
Step-by-step explanation:
The most common cancer diagnosis in women is breast cancer. Breast cancer causes the cells of the breast to grow out of control and form a tumor. It is more common in older women, but rare in teens. Early detection through regular screenings increases the chances of successful treatment through surgery.