What causes dysplasia of cervix?

Human Papillomavirus. The most common cause of dysplasia of the uterine cervix is human papillomavirus (hpv). There are several hundred types, but 6, 11, 16, 18, 32, and 33 are the most common. It is a pre-cursor to the development of cancer. However, with cervical cytology (pap smears), people with low grade dysplasia (lgsil) rarely progress, while patients with hgsil will have excision (cone biopsy).