What is the impact of corpus uterine invasion on oncologic outcomes in surgically treated cervical cancer?

AIM: To investigate the clinical significance of uterine corpus involvement in patients with surgically treated cervical cancer. METHODS: Patients (n = 354) with clinical early-stage (stage IB1-IIA2) cervical cancer who underwent radical hysterectomy and pelvic ± paraaortic lymphadenectomy were evaluated. RESULTS: Uterine invasion was detected in 60 (16.9%) patients. Patients with uterine invasion had a higher rate of pelvic lymph node metastasis than those without uterine invasion (35% vs 22.8%, p = 0.046). In multivariate analysis, no statistically significant difference was identified between patients with and without uterine invasion for pelvic lymph node metastasis (p = 0.953). Uterine invasion was identified as an independent risk factor for paraaortic lymph node metastasis in multivariate analysis (p = 0.012). The presence of pelvic lymph node metastasis was found to be another significant predictor of paraaortic lymph node involvement (p = 0.022). In addition, uterine invasion and lymph node metastasis were identified as an independent risk factors regarding poor prognosis in cancer-specific survival (hazard ratio [HR]: 4.537; 95% confidence interval [CI], 1.304-15.782; p = 0.017 and HR: 5.598; 95% CI, 1.581-19.823; p = 0.008, respectively). CONCLUSIONS: Uterine invasion is an independent predictor of decreased survival and the presence of paraaortic lymph node metastasis in cervical cancer. The presence of the uterine invasion in cervical cancer should be considered as a poor prognostic factor in the decision of treatment.