Extension of organized cervical cancer screening programmes in Italy and their process indicators, 2011-2012 activity

Abstract

Italian national guidelines recommend regional implementation of organized screening programmes for cervical cancer. As we have been doing since 1998, we collected aggregated tables of data from Italian organized cervical screening programmes in order to centrally compute process indicators. Data on women invited during 2011 and 2012 and screened up to April of the subsequent year were considered. In 2012, the target population of Italian organized screening programmes included 14,497,207 women, corresponding to 87.3% of Italian women aged 25-64 years. Compliance to invitation was 41.2%in 2011 and 40.8%in 2012, with a strong decreasing North-South trend. However, it should be considered that many women are screened outside any organized programmes. In 2012, of the women screened, 3.5% were referred for repeat cytology and 71.1% of them complied; 2.4% of screened women were referred to colposcopy. Compliance with colposcopy referral was 85.3%among women referred because of ASC-US or more severe cytology and 90.4% among those referred because of HSIL or more severe cytology. The positive predictive value (PPV) of referral because of ASC-US or more severe cytology for CIN2 or more severe histology was 16.9%. The unadjusted detection rate of CIN2 or more severe histology was 3.4 per 1,000 screened women (3.6 standardized on the Italian population, truncated 25-64). CIN2 or more severe histology was detected in 64.6% of colposcopies classified as grade 2 or higher. Of all colposcopies during which a CIN2 or more severe histology was obtained, 33.6% were classified as grade 2 or higher. Follow-up only was recommended to 81.7% of women with CIN1. Excision by radio-frequency device was the most common treatment for women with CIN2 (52.8%) and CIN3 (57.0%). However 0.4% of all CIN2 and 2.3% of all CIN3 had hysterectomy.