Should unsatisfactory colposcopy necessitate treatment of cervical intraepithelial neoplasia 1?
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.


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.
Day
Tania
T
Department of Obstetrics and Gynecology, Women and Infants' Hospital of Rhode Island, Brown Medical School, Providence, RI 02905, USA.
Weitzen
Sherry
S
Cooper
Amy S
AS
Boardman
Lori A
LA
D000328:Adult; D000367:Age Factors; D001706:Biopsy / Q000379:methods; D002584:Cervix Uteri / Q000473:pathology*; D015331:Cohort Studies; D003127:Colposcopy; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D016017:Odds Ratio; D017410:Practice Guidelines as Topic; D015995:Prevalence; D002583:Uterine Cervical Neoplasms / Q000453:epidemiology / Q000473:pathology* / Q000628:therapy; D002578:Uterine Cervical Dysplasia / Q000453:epidemiology / Q000473:pathology* / Q000628:therapy