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  • Title: [Risk factors and prognosis of node-positive cervical carcinoma].
    Author: Feng SY, Zhang YN, Liu JG.
    Journal: Ai Zheng; 2005 Oct; 24(10):1261-6. PubMed ID: 16219145.
    Abstract:
    BACKGROUND & OBJECTIVE: Pelvic lymph node metastasis is an important prognostic factor of cervical carcinoma, but few have been reported on both risk factors and prognostic factors of node-positive cervical carcinoma. This study was to evaluate risk factors, distribution pattern, and prognosis of node-positive cervical carcinoma, and explore the forecast of lymph node metastasis and appropriate treatment. METHODS: Clinical data of 205 cervical cancer patients who had undergone radical hysterectomy and bilateral pelvic lymphadenectomy were analyzed retrospectively. RESULTS: The overall prevalence of lymph node metastasis was 24.4% (50/205). Univariate analysis showed that risk factors of node metastasis were serum level of squamous cell carcinoma antigen (SCC-Ag) before treatment, clinical stage, invasive depth of cervical canal or vaginal portion of the cervix, and uterine ligaments involvement. SCC values exceeding 4 microg/L increased the risk of nodal metastasis by 4.2 folds (P<0.001, OR=4.212). Multivariate analysis showed that clinical stage and invasive depth of cervical canal were the major risk factors. The obturator and obturator fossae lymph nodes were the most frequently involved, with a rate of 48.0%. Moreover, 60.0% node-positive patients had multiple sites lymph node metastases, and saltatory metastasis was found. Lymph node metastasis was closely related to deep muscularis involvement of the cervix and parametrial involvement; 72.0% nodal metastases were accompanied with deep muscularis involvement of the cervix, 90.9% uterine ligament invasions were accompanied with lymph node metastasis. The 5-year survival rate was significantly higher in the patients received postoperative radiation than in the patients didn't receive radiation (89.1% vs. 45.5%, P=0.012). CONCLUSIONS: Serum level of SCC-Ag before treatment exceeding 4 microg/L, deep muscularis involvement of vaginal portion of the cervix, uterine ligaments involvement, especially advanced stage and deep muscularis involvement of the cervical canal, are risk factors of pelvic lymph node metastasis of cervical cancer. The standard type III radical hysterectomy and bilateral pelvic lymphadenectomy should be performed to the patients with high risk of lymph node metastasis to ensure enough amplitude of parametrectomy and excision of positive nodes. When lymph node metastasis is confirmed after surgery, postoperative radiation can improve the prognosis.
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