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Cervical intraepithelial neoplasia grade 3 lesions can regress

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Munk AC, Kruse AJ, van Diermen B, Janssen EAM, Skaland I, Gudlaugsson E, Nilsen ST, Baak JP. Cervical intraepithelial neoplasia grade 3 lesions can regress. APMIS 2007;115:1409–14.

Up to 30% of cervical intraepithelial grades 2–3 (CIN2–3) lesions regress, but some believe that “regression” is due to “curative” punch biopsies. If this is true, CIN2–3 in the resection margins of the biopsies would be associated with more frequent “persistent” CIN2–3. If, however, immunology-related regression exists, regression would increase with increasing biopsy-cone interval. In 61 punch biopsies diagnosed as CIN3 at careful review by two independent gynaecological pathologists, CIN3 in the resection margins and duration of the biopsy-cone interval was evaluated in relation to CIN2–3-or-not in the cones (again after independent review by expert pathologists). 10 of 61 (16%) patients with CIN3 showed CIN1 or less in the follow-up cones. CIN3-or-not in the resection margins, size of the lesion in the punch biopsy, and presence or absence of CIN2–3 in the cones were not correlated with regression-or-not. However, the number of cones without CIN2–3 increased with longer biopsy-cone interval, 5% in patients with a punch-cone biopsy interval under 9 weeks and 38%≥9 weeks (p<0.001). These results favour the hypothesis that CIN3 can regress, and do not support the “curative punch biopsy” theory.

Keywords: Cervix; HSIL; intraepithelial neoplasia; regression

Document Type: Research Article


Affiliations: Departments of Pathology, Stavanger University Hospital, Stavanger

Publication date: 2007-12-01

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