Four versus six chemotherapy cycles in endometrial carcinoma with a high risk of recurrence: a retrospective study.

OBJECTIVE: This study compared the survival outcomes and the incidence of chemotherapy-related adverse events in endometrial cancer patients who received four and six cycles of adjuvant chemotherapy to examine the optimal number of adjuvant chemotherapy cycles. METHODS: A total of 112 patients with endometrial cancer with a high risk of recurrence were retrospectively enrolled; 46 patients received four cycles and 66 received six cycles of adjuvant chemotherapy. Between-group differences of overall survival, disease-free survival, hematological and non-hematological toxicities were analyzed. Baseline patient's background differences were assessed with inverse probability of treatment weighting using propensity score. RESULTS: Overall and disease-free survivals between the two groups were not significantly different. Paclitaxel + carboplatin, every 3-4 weeks was the most frequently used chemotherapy regimen in both groups. Patients in the six-cycle chemotherapy group developed neutropenia G4 or febrile neutropenia more frequently than those in the four-cycle group; odds ratio (95% confidence interval) is 4.07 (1.51-10.96). Peripheral sensory neuropathy was the most frequently observed non-hematological toxicity; the incidence of peripheral sensory neuropathy was not significantly different between four- and six-cycle chemotherapy group, P = 0.832. The result was same in the subgroup analysis in patients who received TC regimen, P = 0.455. CONCLUSION: This study implies a possible benefit of fewer cycles of adjuvant chemotherapy in endometrial cancer patients with a high risk of recurrence because of the lower incidence of hematological toxicities without impairing survival outcomes.

New revised FIGO 2008 staging system for endometrial cancer produces better discrimination in survival compared with the 1988 staging system.

BACKGROUND AND OBJECTIVES: The aim of this study was to analyze the stage migration and survival of endometrial cancer by the revised FIGO 2008 staging system compared with the 1988 staging system. METHODS: A total of 355 patients with endometrial cancer, who underwent complete surgical staging, were enrolled. We compared the surgical stages and survival by FIGO 1988 staging system with those by FIGO 2008 staging system. RESULTS: 2008 FIGO staging system resulted in an increase of stage I patients and decrease of stage II and IIIa patients. The 5-year overall survival (OS) rates for patients with 2008 FIGO stage IA and IB disease were 98.2% and 91.9%, respectively (P = 0.004). Five-year OS rate of new stage II (82.6%) was significantly worse than that of new stage IA (98.2%, P = 0.003). Patients with positive washing cytology alone revealed a 5-year OS rate similar to that of patients with new stage IIIA disease (96.2% vs. 90.9%, respectively; P = 0.53). The 5-year OS rate for patients with stage IIIC1 disease was improved compared with that for patients with stage IIIC2 disease (85.7% vs. 63.0%, respectively; P = 0.08). CONCLUSION: New revised FIGO 2008 staging system for endometrial cancer produced better discrimination in OS outcomes compared with the 1988 system.

Clinical efficacy of paclitaxel/cisplatin as an adjuvant chemotherapy for patients with cervical cancer who underwent radical hysterectomy and systematic lymphadenectomy.

BACKGROUND AND OBJECTIVES: The aim of this study was to compare the clinical efficacy of paclitaxel/cisplatin (TP) as an adjuvant chemotherapy to adjuvant radiotherapy (RT) after radical hysterectomy and systematic lymphadenectomy for patients with cervical cancer. METHODS: A total of 125 patients with early-stage cervical cancer, who underwent radical hysterectomy, and received adjuvant therapy due to recurrent risk factors were retrospectively analyzed. Forty-nine patients were treated with RT, and 32 received paclitaxel/cisplatin (TP) for three to six cycles at 4-week interval. Survival and postoperative complications were compared between two modalities. RESULTS: There was no significant difference of 3-year disease-free survival between two groups (P = 0.23), while significantly better 3-year overall survival in TP group than RT group (P = 0.02). Seven of 32 patients (21.9%) treated with adjuvant TP, 16 of 49 patients (32.7%) treated with RT showed disease recurrence. Median of survival time after recurrence in RT group and TP group was 8.5 months, 12.0 months, respectively. Postoperative bowel obstruction was significantly more frequent in the RT group compared to the TP group (P = 0.01). CONCLUSIONS: Postoperative chemotherapy using TP might be more beneficial for survival than adjuvant RT and can reduce postoperative complications for cervical cancer patients treated with radical hysterectomy.

Multivariate survival analysis of the patients with recurrent endometrial cancer.

OBJECTIVE: Few studies on the prognosticators of the patients with recurrent endometrial cancer after relapse have been reported in the literature. The aim of this study was to determine the prognosticators after relapse in patients with recurrent endometrial cancer who underwent primary complete cytoreductive surgery and adjuvant chemotherapy. METHODS: Thirty-five patients with recurrent endometrial cancer were included in this retrospective analysis. The prognostic significance of several clinicopathological factors including histologic type, risk for recurrence, time to relapse after primary surgery, number of relapse sites, site of relapse, treatment modality, and complete resection of recurrent tumors were evaluated. Survival analyses were performed by Kaplan-Meier curves and the log-rank test. Independent prognostic factors were determined by multivariate Cox regression analysis. RESULTS: Among the clinicopathological factors analyzed, histologic type (p=0.04), time to relapse after primary surgery (p=0.03), and the number of relapse sites (p=0.03) were significantly related to survival after relapse. Multivariate analysis revealed that time to relapse after primary surgery (hazard ratio, 6.8; p=0.004) and the number of relapse sites (hazard ratio, 11.1; p=0.002) were independent prognostic factors for survival after relapse. Survival after relapse could be stratified into three groups by the combination of two independent prognostic factors. CONCLUSION: We conclude that time to relapse after primary surgery, and the number of relapse sites were independent prognostic factors for survival after relapse in patients with recurrent endometrial cancer.

Survival and prognosticators of node-positive cervical cancer patients treated with radical hysterectomy and systematic lymphadenectomy.

OBJECTIVE: Lymph node metastasis (LNM) is known to be the most important prognostic factor in cervical cancer. We analyzed the number of positive lymph nodes and other clinicopathological factors as prognostic factors for survival in node-positive patients with cervical cancer. METHODS: Node-positive cervical cancer patients (n = 108) who underwent radical hysterectomy and systematic lymphadenectomy in Hokkaido University Hospital from 1982 to 2002 were enrolled. Clinicopathological data including age, stage, histologic subtype, and the number of LNM sites were collected. The main outcome was the overall survival (OS) rate for Stage Ib-IIb patients treated with surgery and postoperative radiotherapy. RESULTS: The 5-year OS rate of patients with 1 positive node was 93.3%, that for 2 nodes was 77.3%, for 3 nodes it was 33.3%, and for 4 or more it was 13.8%. The OS rate of patients with 1 or 2 LNM sites was significantly better than that for patients with more than 2 LNM sites. The OS rate of patients with adenocarcinoma (Ad) (28.6%) was significantly lower than that for patients with other histologic subtypes (squamous cell carcinoma; 66.7%, adenosquamous carcinoma; 75.0%, p = 0.0003). Multivariate analysis revealed that >2 LNM sites and Ad were independent prognostic factors for survival. The 5-year OS rate of patients with 1 or 2 LNM sites was 86.8%, a more favorable prognosis than the OS rates in other reports. CONCLUSION: More than two LNM sites and adenocarcinoma were independent prognostic factors for node-positive patients with cervical cancer.