JOURNAL ARTICLE
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Postoperative radiation therapy improves prognosis in patients with adverse risk factors in localized, early-stage cervical cancer: a retrospective comparative study.

The objective of this study was to assess the role of postoperative radiotherapy (RT) in early-stage cervical carcinoma with risk factors other than positive nodes, parametrial invasion, or positive margins and to compare outcomes using the Leiden University Medical Center (LUMC) modification of the Gynecologic Oncology Group (GOG) system with the GOG prognostic scoring system itself. Between January 1984 and April 2005, 402 patients with early-stage cervical cancer underwent radical hysterectomy. A total of 51 patients (13%) had two of the three risk factors and had pathologic tumor size (> or =40 mm), invasion (> or =15 mm), and capillary lymphatic space involvement, and were identified as the so-called high-risk (HR). We compared 34 patients who received RT based on the LUMC risk profile (67%) with 17 who did not (33%). The GOG score was calculated as well. We compared the GOG scores within the LUMC risk groups: HR+ (two out of three risk factors) and HR- (less than two out of three risk factors). Differences in 5-year cancer-specific survival (CSS) and 5-year disease-free survival (DFS) between the HR group treated with RT (86%, 85%) and without RT (57%; 43%) were statistically significant. The LUMC criteria did not significantly differ from the GOG risk profile, concerning recurrence, CSS, and DFS. HR patients benefit from adjuvant RT. The LUMC modification of the GOG system seems to be simpler and has a slightly higher threshold for the indication for RT but without a difference in outcome.

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