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Japanese Journal of Clinical Oncology, Vol 28, Issue 11 673-678, Copyright © 1998 by Foundation for Promotion of Cancer Research

ORIGINAL ARTICLE

Clinicopathological factors predicting retroperitoneal lymph node metastasis and survival in endometrial cancer

X Tang, K Tanemura, W Ye, K Ohmi, R Tsunematsu, T Yamada, N Katsumata and T Sonoda
Division of Gynecology, National Cancer Center, Tokyo, Japan.

BACKGROUND: By clarifying the significance of clinicopathological factors for retroperitoneal lymph node metastasis and survival of patients with endometrial cancer, we suggest ideas for optimal treatment of this disease. METHODS: A retrospective study was conducted in 310 women with endometrial cancer who underwent surgery with retroperitoneal lymphadenectomy. To evaluate retroperitoneal lymph node metastasis, age-adjusted and multivariable analyses were carried out for six clinicopathological factors including pathological grade, myometrial invasion, cervical invasion, peritoneal cytology, lymphatic permeation and vascular invasion. To evaluate survival, besides the above factors, a positive rate of metastasis of dissected retroperitoneal lymph nodes was included. RESULTS: In 40 patients (13%) with nodal metastasis, the average positive rate of metastasis of dissected retroperitoneal lymph nodes was 22%. For retroperitoneal lymph node metastasis, the odds ratio of deep myometrial invasion, cervical invasion and severe lymphatic permeation were 5.97, 2.72 and 12.01, respectively. For survival, the hazard ratios of the positive rates of metastasis of dissected retroperitoneal lymph nodes (both 25% and < 25%), positive peritoneal cytology and poor pathological grade were 7.10, 3.24, 3.82 and 3.27, respectively, and 5-year survival rates for them were 0, 50, 72 and 77%, respectively. CONCLUSIONS: For retroperitoneal lymph node metastasis, lymphatic permeation, deep myometrial invasion and cervical invasion were the independent prognostic factors. For survival, retroperitoneal lymph metastasis, poor pathological grades and positive peritoneal cytology were the independent prognostic factors. The positive rate of metastasis of dissected retroperitoneal lymph metastasis plays an important role in predicting survival of endometrial cancer. Lymph node biopsy is insufficient in treatment of this disease.
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