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  • Title: Endometrial carcinoma detected with SurePath liquid-based cervical cytology: comparison with conventional cytology.
    Author: Patel C, Ullal A, Roberts M, Brady J, Birch P, Bulmer JN, Wadehra V.
    Journal: Cytopathology; 2009 Dec; 20(6):380-7. PubMed ID: 19207308.
    Abstract:
    INTRODUCTION: Conventional Pap smears (CPS) have little impact on the detection of endometrial carcinoma. Although liquid-based cytology (LBC) is replacing CPS in the UK, experience with identification of endometrial cancers with this technique is limited. AIM: To compare the accuracy of the SurePath LBC with that of CPS for detection of endometrial cancers. METHODS: Our study group comprised SurePath LBC samples reported as atypical endometrial cells and endometrial adenocarcinoma (classified respectively as borderline, code 8 and ?glandular neoplasia, code 6 for the NHS Cervical Screening Programme statistics) in 2004-2005. CPS reported as atypical endometrial cells or adenocarcinoma in 1993-1998 comprised the control group. Histological follow-up was obtained. RESULTS: Endometrial abnormalities were reported in 95 (0.073%) of 130 352 LBC samples, comprising 75 (0.058%) atypical endometrial cells and 20 (0.015%) endometrial adenocarcinoma reports. Of 409 495 CPS, 117 (0.029%) were diagnosed as endometrial abnormalities, comprising 59 (0.014%) atypical endometrial cells and 58 (0.014%) endometrial adenocarcinoma reports. Thus, the endometrial adenocarcinoma reporting rate was similar in both groups, but that for atypical endometrial cells was higher with LBC (P < 0.001). The positive predictive value for endometrial cancer of endometrial adenocarcinoma and atypical endometrial cell reports in the LBC group was 73.3 and 18.8%, respectively, compared with 42.3 and 6.7% in the CPS group. The endometrial adenocarcinoma patients in CPS group were older (mean age 62.5 years versus 56.5 years) and most (22/25) were symptomatic, whereas most (13/17) patients in the LBC group were asymptomatic at the time of sampling (P < 0.001). CONCLUSION: SurePath LBC is at least as accurate a method for detecting endometrial cancer as CPS. SurePath LBC demonstrates enhanced identification of endometrial pathology in asymptomatic women in the cervical screening programme.
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