MedicalTerminology DB

Meaning of stage I vulvar cancer: Stage I vulvar cancer is divided into stages IA and IB.

Definition of stage I vulvar cancer

Stage I vulvar cancer is divided into stages IA and IB. In both IA and IB, cancer is found only in the vulva or in the vulva and perineum (area between the rectum and the vagina) and the tumor is 2 centimeters or smaller. In stage IA, the tumor has spread 1 millimeter or less into the tissue of the vulva. In stage IB, the tumor has spread more than 1 millimeter into the tissue of the vulva.

Written and maintained by James Murray Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.