1. Abnormal vaginal bleeding is common, malignancy rare
2. 4. M Coppleson, KH Atkinson, and JC Dalrymple . Cervical squamous and glandular intraepithelial neoplasia: clinical features and review of management . In: Coppleson M, Monaghan JM, Morrow CP, Tattersall MHN, (eds). Gynecologic Oncology. Second edition, 1992 ; Chap 36: 571 -607 .