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  • Title: Analysis of FIGO Stage IIIc endometrial cancer patients.
    Author: McMeekin DS, Lashbrook D, Gold M, Johnson G, Walker JL, Mannel R.
    Journal: Gynecol Oncol; 2001 May; 81(2):273-8. PubMed ID: 11330962.
    Abstract:
    OBJECTIVE: The aim of this study was to analyze FIGO Stage IIIc endometrial cancer (EC) patients to better define clinicopathologic associations, patterns of failure, and survival. METHODS: Charts were abstracted from EC patients with lymph node metastasis from 1989 to 1998. Data on clinicopathologic variables, adjuvant treatment, site of first recurrence, and survival were collected. Associations between variables were tested by chi(2) and Wilcoxon rank sums. Survival analyses were performed by the Kaplan-Meier method, and multiple regression analysis was done by the Cox proportional hazards model. RESULTS: From 607 EC patients evaluated, 47 (8%) were identified with FIGO Stage IIIc disease. All 47 underwent hysterectomy and pelvic lymph node (PLN) sampling, and 42/47 had para-aortic lymph node (PALN) sampling. Stage IIIc disease was defined by positive PLN alone in 38%, positive PLN and PALN in 41%, and positive PALN alone in 17%. Twelve of 47 also had positive peritoneal cytology and/or adnexal metastases. Grade III tumors were present in 56% and >50% myometrial invasion in 61%. No association between depth of invasion (DOI) and grade was seen, however. Nearly 1/3 of cases had papillary serous or clear cell histology. Postoperative adjuvant treatment included whole abdominal radiation (36%), pelvic radiation with (19%) and without (17%) extended field, chemotherapy (17%), and oral progestins (11%). The 3-year and 5-year survival estimates for all patients were 77 and 65%, respectively. At a median follow-up of 37 months, 5 patients are alive with disease, and 10 are dead of disease. A distant site of first recurrence was most common (21%), followed by pelvic failure (9%). Only 1 patient has had an abdominal recurrence. Univariate predictors of survival included age, DOI, and extranodal disease, but not grade, histology, or PALN involvement. For the 12 patients with nodal disease and positive cytology and/or adnexa, 3-year survival was 39% versus 93% for those patients without evidence of extranodal disease. In a multivariate analysis only DOI was an independent predictor of survival (P = 0.03). CONCLUSIONS: Once lymph node involvement occurs, the importance of additional extranodal disease increases. Consideration of substaging Stage IIIc patients based on positive adnexa or cytology is supported by the data. The extent which adjuvant treatments contributed to the 77% 3-year survival remains to be defined. The patterns of failure suggest a possible role for combined modalities in future treatments.
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