ObjectiveTo know the correlation of punch-biopsy proven cervical intraepithelial neoplasia (CIN) 3 with the results of cone and hysterectomy.
MethodsWe reviewed the medical records from 1999 to 2008, retrospectively, at a single institution. We checked age, cone and hysterectomy biopsy results, preoperative cervical smear results as well as human papillomavirus results.
ResultsThere were 104 patients whose punch biopsy results were CIN 3. 59 (56.7%) patients underwent cone and 45 did hysterectomy after punch biopsies. Cone found 6.8% of cervical cancer. Among patients undergoing hysterectomy without cone, 8.9% had cervical cancers. There were a lot of inflammations, atypical squamous cells of unknown significance, low-grade squamous intraepithelial lesion done as a Pap results just before cone. The positive rate of HPV was 80.0%. There were 5.1% of underestimated and 6.8% of over-estimated results according to the cone results, and 6.7% of under-estimated and 8.9% of overestimated according to the hysterectomy results.
ConclusionThrough conization, 93.2% of the patients whose punch biopsy results were CIN 3 had CIN and did not need hysterectomy, and 6.8% had cervical cancers and might need further treatment. Through hysterectomy, 91.2% had CIN and might undergo overtreatment. Limited accuracy of punch biopsy of the cervix in defi ning extent and severity of epithelial lesions in women presenting with abnormal Pap smear remains an important clinical problem. Studies correlating the histology diagnosis of biopsy with that of the surgical specimen showed both under-and over-estimations. Biopsy diagnoses that overestimate the grade of cervical intraepithelial neoplasia (CIN) are associated primarily with potential overtreatment. Albeit less frequent, underestimations may have even more serious implications. The greatest concern is that early invasive lesions may be missed and inadvertently treated by an ablative technique [1,2]. Disease relapse in such patients has been described [3]. The