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Journal of Lower Genital Tract Disease:
doi: 10.1097/lgt.0b013e318057f330
Original Articles

Should Unsatisfactory Colposcopy Necessitate Treatment of Cervical Intraepithelial Neoplasia 1?

Day, Tania MD; Weitzen, Sherry PhD; Cooper, Amy S. CRNP; Boardman, Lori A. MD, ScM

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Abstract

Objective. To evaluate the prevalence of cervical intraepithelial neoplasia (CIN) 2 or worse among women undergoing cone biopsy for CIN 1, stratified by colposcopic adequacy.

Materials and Methods. A cross-sectional cohort study was performed using a colposcopic database of 3,004 women seen between August 1999 and December 2005. Data collected included demographic information, indications for treatment, adequacy of colposcopic examination, and final cone pathology. A satisfactory colposcopy was defined as being able to define the entire squamocolumnar junction and visualize all lesions in their entirety. Descriptive statistics and crude and adjusted odds ratios with 95% confidence intervals were calculated.

Results. Of the 440 cone biopsies, 50 (11%) were done for CIN 1, of which 9 (18%) demonstrated CIN 2 or worse, and 23 (46%) were done in the setting of unsatisfactory colposcopy. Compared with women with satisfactory colposcopy, women with unsatisfactory colposcopy were more likely to be older (median age = 33 vs 25 years, p = .01) and to have CIN 1 on endocervical sampling (5/22 [22%] vs 0, p < .01). Persistent (18 months or more) CIN 1 was more commonly encountered in women with satisfactory colposcopy (21/27 [78%] vs 7/23 [30%], p < .01). Women with unsatisfactory colposcopic examinations were at decreased risk of CIN 2+ on final pathology compared with women with satisfactory examinations (1/23 [4%] vs 8/27 [30%], odds ratios = 0.08, 95% confidence intervals = 0.01-0.95).

Conclusions. Women with unsatisfactory colposcopy and CIN 1 are unlikely to have high-grade cervical neoplasia on final pathology. For this subset of women, conservative management is preferable to immediate treatment.

©2008The American Society for Colposcopy and Cervical Pathology

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