Cancer of the cervix is the second most common cancer in women worldwide and is a leading cause of cancer-related death in women in underdeveloped countries. Worldwide, approximately 500,000 cases of cervical cancer are diagnosed each year.
Cervical cancer develops in the lining of the cervix, the lower part of the uterus (womb) that enters the vagina (birth canal). This condition usually develops over time. Normal cervical cells may gradually undergo changes to become precancerous and then cancerous. Cervical intraepithelial neoplasia (CIN) is the term used to describe these abnormal changes. CIN is classified according to the degree of cell abnormality. Low-grade CIN indicates a minimal change in the cells and high-grade CIN indicates a greater degree of abnormality.
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