Agreement Between Endocervical Brush and Endocervical Curettage in Patients Undergoing Repeat Endocervical Sampling
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Agreement Between Endocervical Brush and Endocervical Curettage in Patients Undergoing Repeat Endocervical Sampling Meredith J. Alston MD David W. Doo MD Sara E. Mazzoni MD MPH Elaine H. Stickrath MD Denver Health Medical Center University of Colorado Department of Obstetrics and Gynecology Background • Women with abnormal Pap tests referred for colposcopy frequently require sampling of the endocervix • ASCCP deems both the endocervical brush (ECB) and the endocervical currette (ECC) appropriate means of collecting endocervical samples (1) • Both have advantages and disadvantages, and it is unclear if one modality is superior Background • ECB has good sensitivity for endocervical lesions, it has poor specificity, ranging from 26- 38%2,3 • ECC has an excellent negative predictive value of 99.4% in women who had a satisfactory colposcopy • ECB is better tolerated by the patient, but runs the risk of contamination from the ectocervix • ECC is less likely to obtain an adequate sample Background • The results from the endocervical sample may influence clinical management after colposcopy. • Certain treatment options for high grade squamous intraepithelial neoplasia are available only to women with negative endocervical sampling. ▫ Ablative techniques ▫ Expectant management Background • Over concerns related to potential complications of excisional treatments, as well as over- treatment, there has been a push to re-introduce ablative techniques and, in appropriate clinical circumstances, expectant management, into the routine treatment of patients with cervical cancer precursors (12). Background • At our institution, it is our concern that due to the possibility of contamination from the ectocervix, a positive ECB may not represent a true positive endocervical sample. • We do not use a sleeve • Positive ECBs return for ECC if otherwise a candidate for ablative therapy or expectant management Objective • To describe the agreement between these two modalities of endocervical sampling. • Aid clinicians in: ▫ counseling of patients ▫ interpretation of results ▫ selection of an endocervical sampling method in varied clinical scenarios Methods • IRB approval was obtained through the Colorado Multiple Institutional Review Board • Retrospective cohort study • April 1, 2013-June 15, 201 • ECB and returned for ECC Methods • ECB sampling results ▫ “Low-grade” LSIL ASCUS ▫ “High-grade” HSIL ASC-H • ECC results: negative, LSIL, and HSIL according to LAST terminology(13). Methods • Demographics: ▫ Age ▫ Gravidity ▫ Parity ▫ Insurance ▫ primary language ▫ Contraception ▫ menopausal status ▫ Weight ▫ current drug or tobacco use ▫ history of prior treatment for dysplasia (including type of treatment) Methods • REDCap • Percent agreement between ECB and ECC were calculated based on “low-grade” and “high-grade” classifications • Chi-square and student’s t-test were used to determine differences in dichotomous and continuous variables • Multivariate analyses, using logistic regression modeling, were used to compare outcome measures among the groups • Statistical tests were considered significant at P<0.05. Table 1. Patient Demographics and Clinical Characteristics Mean Age (years) 33.9 ± 10.3 Gravidity 2.27 ± 1.8 Results Parity 1.8 ± 1.5 Primary Language English 56 (70.9%) Spanish 20 (25.3%) Other 3 (3.8%) Insurance Yes 56 (70.9%) No 23 (29.1%) Contraception Method Condoms 7 (8.9%) Depo Provera 4 (5.1%) Implanon/Nexplanon 6 (7.6%) IUD 19 (24.1%) OCPs/Patch/Ring 6 (7.6%) Menopause 7 (8.9%) Sterilization 6 (7.6%) Tobacco Use Yes 14 (17.7%) No 65 (82.3%) Drug Use Yes 2 (2.5%) No 77 (97.5%) History of Prior Treatment Yes 4 (5.1%) No 57 (72.2%) Not Documented 18 (22.8%) Results Results Table 2. Demographic and Clinical Predictors of Agreement Between ECB and ECC Variable Agreement No Agreement P Value n=8 n=71 Mean Age (years) 44.3 ± 13.3 32.7 ± 9.3 0.049 Mean Parity 1.5 ± 1.1 1.9 ± 1.6 0.38 Mean weight (pounds) 169 ± 36 156 ± 39 0.37 Primary Language English 5 (62.5%) 51 (71.8%) 0.59 Insured 6 (75.0%) 50 (70.4%) 0.78 Progestin Only Contraception 1 (12.5%) 22 (31.0%) 0.24 Estrogen Contraception 0 6 (8.5%) 1 Menopause 3 (37.5%) 4 (5.6%) 0.02 IUD 0 14 (19.7%) 0.07 Tobacco 2 (25.0%) 12 (16.9%) 0.59 Drugs 0 2 (2.8%) 1 Prior Excision 2 (25.0%) 1 (1.4%) 0.03 Atrophy 1 (12.5%) 7 (9.9%) 1 IUD = Intrauterine Device Discussion • There is poor agreement between ECB and ECC results for both low-grade (7.4%) and high-grade (16%) dysplasia at the time of colposcopy in our patient population using an unsleeved cytobrush. Discussion • Although the ASCCP recommends either cytobrush or curettage for evaluation of the endocervix(15), there has been a significant amount of controversy over which is the preferred method. • Previous studies that have compared the relative sensitivities and specificities of the two methods have produced a wide range of results. Discussion • Our data suggests that ECB collected at the time of colposcopy overestimates the presence of endocervical disease when compared to ECC. We suspect that this may be in a large part due to atypical ectocervical cells adhering to the brush at the time of ECB and thus giving false positive results. Discussion • In our patient population, given the poor agreement between the two modalities, we have elected to perform endocervical sampling with ECC in those patients who may be candidates for expectant management or ablative therapies. References • 1. Saslow D, Solomon D, Lawson HW, Killackey M, Kulasingam SL, Cain JM, et al. American Cancer Society, American Society for Colposcopy and Cervical Pathology, and American Society for Clinical Pathology screening guidelines for the prevention and early detection of cervical cancer. J Low Genit Tract Dis. 2012 Jul;16(3):175–204. • 2. Holmstrom S. A prospective randomized comparison of the endocervical brush and endocervical curette. Obstet Gynecol. 2002 Apr;99(4):S4. • 3. Mogensen ST, Bak M, Dueholm M, Frost L, Knoblauch NO, Praest J, et al. Cytobrush and endocervical curettage in the diagnosis of dysplasia and malignancy of the uterine cervix. Acta Obstet Gynecol Scand. 1997 Jan;76(1):69–73. • 4. Boardman LA, Meinz H, Steinhoff MM, Heber WW, Blume J. A randomized trial of the sleeved cytobrush and the endocervical curette. Obstet Gynecol. 2003 Mar;101(3):426–30. • 5. Weitzman GA, Korhonen MO, Reeves KO, Irwin JF, Carter TS, Kaufman RH. Endocervical brush cytology. An alternative to endocervical curettage? J Reprod Med. 1988 Aug;33(8):677–83. • 6. Andersen W, Frierson H, Barber S, Tabbarah S, Taylor P, Underwood P. Sensitivity and specificity of endocervical curettage and the endocervical brush for the evaluation of the endocervical canal. Am J Obstet Gynecol. 1988 Sep;159(3):702–7. • 7. Klam S, Arseneau J, Mansour N, Franco E, Ferenczy A. Comparison of endocervical curettage and endocervical brushing. Obstet Gynecol. 2000 Jul;96(1):90–4. • 8. Dunn TS, Stevens-Simon C, Moeller LD, Miekle S. Comparing endocervical curettage and endocervical brush at colposcopy. J Low Genit Tract Dis. 2000 Apr;4(2):76–8. • 9. Hoffman MS, Sterghos S, Gordy LW, Gunasekaran S, Cavanagh D. Evaluation of the cervical canal with the endocervical brush. Obstet Gynecol. 1993 Oct;82(4 Pt 1):573–7. • 10. Gosewehr JA, Julian TM, O’Connell BJ. Improving the Cytobrush as an aid in the evaluation of the abnormal Papanicolaou test. Obstet Gynecol. 1991 Sep;78(3 Pt 1):440–3. • 11. Kyrgiou M, Koliopoulos G, Martin-Hirsch P, Arbyn M, Prendiville W, Paraskevaidis E. Obstetric outcomes after conservative treatment for intraepithelial or early invasive cervical lesions: systematic review and meta-analysis. Lancet Lond Engl. 2006 Feb 11;367(9509):489–98. • 12. Khan MJ, Smith-McCune KK. Treatment of cervical precancers: back to basics. Obstet Gynecol. 2014 Jun;123(6):1339–43. • 13. Darragh TM, Colgan TJ, Cox JT, Heller DS, Henry MR, Luff RD, et al. The Lower Anogenital Squamous Terminology Standardization Project for HPV-Associated Lesions: Background and Consensus Recommendations From the College of American Pathologists and the American Society for Colposcopy and Cervical Pathology. J Low Genit Tract Dis. 2012 Jul;16(3):205–42. • 14. Harris PA, Taylor R, Thielke R, Payne J, Gonzalez N, Conde JG. Research electronic data capture (REDCap)--a metadata-driven methodology and workflow process for providing translational research informatics support. J Biomed Inform. 2009 Apr;42(2):377–81. • 15. Massad LS, Einstein MH, Huh WK, Katki HA, Kinney WK, Schiffman M, et al. 2012 updated consensus guidelines for the management of abnormal cervical cancer screening tests and cancer precursors. J Low Genit Tract Dis. 2013 Apr;17(5 Suppl 1):S1–27. • Thank you! Are Women With Abnormal Pap Smears Being Discharged from Colposcopy Too Soon? Rachel Kupets MD, MSc, Anna Kone PHD, Julia Gao, Li Wang Ontario Cervical Screening Program, Cancer Care Ontario Verbal Disclosure •No Disclosures Introduction • Research has found that more than half of women referred for abnormal cervical cytology are exited from colposcopy with out undergoing treatment • Concern that lesions may have been missed in untreated women who may continue to be at elevated risk of developing cervical cancer • Mcredie et al. published that 50% of women with untreated CIN III progressed into invasive cancer • Concern whether colposcopy has adequately excluded high grade cervical dysplasia Kupets, R et al, J Obstet Gynaecol Can. 2014 Dec;36(12):1079-84. McCredie MR, et al Lancet Oncol. 2008 May;9(5):425-34. doi: 10.1016/S1470-2045(08)70103-7 Objective • To determine