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There is a continuous debate about the extent and prognostic value of retroperitoneal lymphadenectomy in endometrial cancer. Systematic pelvic and para-aortic lymphadenectomy in endometrial cancer provides a more accurate assessment of neoplastic spread and may help in better individualization of patients for adjuvant therapy. To evaluate the risk and pattern of retroperitoneal lymph nodes metastasis in patients with endometrial cancers having intermediate and high risk factors for nodal metastasis and recurrence. We conducted a prospective nonrandomized study of 62 cases of high risk endometrial cancers examined and treated at our regional cancer institute between the years 2008 and 2012. The inclusion criteria: The intermediate risk; all patients having grade 3 or undifferentiated adenocarcinomas with less than half MI and the grade 1, 2 tumors having more than half MI with tumor size &gt;2 cm. The high risk group; all the patients having grade 3 or undifferentiated adenocarcinomas with more than half MI, the grade 1, 2 tumors with lymph vascular space invasion (LVSI) or cervical stromal invasion as depicted by pre-operative MRI. The type 2 histology uterine papillary serous, clear cell and squamous cell carcinomas. The patients staging was carried out according to the classification established by the FIGO for endometrial cancer in 2009. The Chi-square test was used to analyze the correlation between tumor grade, myometrial invasion, size of the lesion and lymph nodes metastasis and Fisher's correction done whenever the frequency distribution was less than five. The patients mean age was 58.3 (range 31 to 76 years). A total of 118 endometrial cancer patients were treated during the study period. The 56 (47.5 %) patients belonged to low risk and 62 (52.5 %) patients belonged to high risk endometrial cancers. The 52 of 62 cases were eligible for the analysis. The 10 patients' were excluded from further analysis as the post operative specimens final histopathologic examinations in nine cases revealed carcinosarcoma uterus and one case with yolk sac tumor of endometrium. The total 17(32.7 %) of 52 cases had retroperitoneal nodes metastasis; nine of 17 (52.9 %) in this group had both pelvic and para-aortic lymph nodal metastasis and one of 17 (5.9 %) had isolated para-aortic lymph nodal metastasis. The high grade tumors (grade 3) revealed 41.4 % pelvic and 20.7 % para-aortic lymph nodes metastasis and there was statistically significant higher nodal metastasis in both pelvic and para-aortic lymph nodes with increasing depth of myometrial invasion (P = 0.0119 and P = 0.0001) and increasing size of the lesion. (P = 0.04 and P = 0.0501). The intermediate and high risk endometrial cancer is associated with greater degree of lymph node metastasis. A complete surgical staging which involves extrafascial hysterectomy or a type 3 radical hysterectomy when there is a cervical involvement, along with bilateral salphingo-oophorectomy, pelvic, para-aortic lymphadenectomy and an omentectomy when indicated as in the present study, is a valuable modality of treatment in intermediate and high risk cases of endometrial cancers for determining the prognosis and appropriate categorization of these women for adjuvant therapy. It is also possible to achieve a complete surgical staging in these groups of women with acceptable morbidity when performed by a trained gynaecologic oncologist.

The Risk and Pattern of Pelvic and Para Aortic Lymph Nodal Metastasis in Patients with Intermediate and High Risk Endometrial Cancer