Background: Pretreatment prognostic information is lacking for patients with cervical cancer International Federation of Gynecology and Obstetrics (FIGO) stage IB1 disease. Thus, we attempted to identify a high-risk subgroup among them prior to treatment. Methods: Cervical cancer FIGO stage IB1 patients who had received curative treatment with various modalities in our institute between January 2004 and December 2010 were enrolled. Pretreatment clinical parameters including age, squamous cell carcinoma antigen (SCC-Ag), carcinoembryonic antigen, hemoglobin (Hb) level, platelet count, histological type, and treatment modality were analyzed for treatment outcomes. Results: One hundred ninety-seven patients were included with a median follow-up of 66 months (range 6-119 months). In Cox regression analysis, only SCC histology (HR 0.457, 95% CI 0.241-0.967, p = 0.017) was an independent factor predicting better disease-free survival (DFS). Among SCC histology, patients with an Hb level less than 12 g/dl and a SCC-Ag level more than 3 ng/ml had worse treatment outcomes. The 5-year DFS rates were 89.2, 69.3, and 44.4% for the patients at low-risk (SCC, Hb >12 g/dl, SCC-Ag ≤3 ng/ml), intermediate-risk (non-SCC), and high-risk (SCC, Hb ≤12 g/dl, SCC-Ag >3 ng/ml), respectively (p < 0.001). Conclusion: Non-SCC and SCC histology with both anemia and high pretreatment SCC-Ag level were associated with recurrence. Further validation studies are warranted for clarification.
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