Early warning signs of stage 0 cancer: Recognising carcinoma in situ in mouth, skin, breast, and more

Stage 0 cancer, known as carcinoma in situ, marks the earliest stage of cancer development. Abnormal cells are present but have not spread. Early detection and treatment are crucial for preventing invasive cancer. Common sites include the cervix, breast, skin, mouth, and bladder. Routine screenings play a vital role in identifying these early changes.