abnormal findings on cervical biopsy
grades 1-3
some treat CIN 1
CIN 1
14% to CIN 3
26% CIN 1
60% regress
see CIN 1 in 6 months
CIN 3 30-80% untreated women will develop invasive cancer - mean interval 7.8 years
CIN 2 and CIN 3 usually treated by LLETZ (loop excision)