Comparison of the Efficacy and Toxicity Between Radiotherapy and Chemotherapy in Nodal and Isolated Nonnodal Recurrence of Ovarian Cancer:

Tertiary Cytoreduction for Isolated Lymphnode Recurrence (ILNR) Ovarian Cancer in a BRCA2 Mutated Patient: Our Experience and Prevalence of BRCA 1 or 2 Genes Mutational Status in ILNR

We report the case of a tertiary cytoreductive surgery for isolated lymph-node recurrence (ILNR) in a 54-years old Brest cancer 2 (BRCA 2) mutated patients, with a personal history of ovarian cancer previously treated elsewhere. She was admitted to our department for a suspected isolated lymph-nodal pelvic recurrence. A positron emission tomography acquisition with contrast enhanced computed tomography (PET-CT) scan revealed an increased node at the level of the right external iliac (SUV 6.9) in correspondence with the obturator nerve, which was confirmed by transvaginal ultrasound. Since the recurrence was in a single site and the patient had previously undergone three lines of chemotherapy and maintenance with Poly(ADP-ribose) polymerase (PARP) inhibitors, we decided to perform tertiary cytoreductive surgery by minimally invasive laparoscopic approach. After gradual and careful isolation of the obturator nerve, lumbo-sacral trunk and venous vessels afferent to the external and internal iliac vein, the suspected node has been removed. No intra- and postoperative complications occurred. The patient was discharged three days after procedure. We decided to quarterly follow-up; actually, after 16 months no recurrence was detected. Several studies have reported ILNR as a unique clinical disease with low growth rate and less chemosensitivity; this can lead to considered ILNR more susceptible to take advantage of surgical treatment, even in case of second or third recurrence. The BRCA mutational status seems to play a role in the decision-making process in the approach to patients with platinum sensitive relapse of ovarian cancer or in specific isolated forms of recurrence such as the hepatic one. However, data on frequency and prognostic impact of BRCA gene mutation in ILNR are very limited. In this article we investigated the role of BRCA 1 or 2 mutational status in this rare pattern of recurrence according to more recent advances in literature.

Isolated lymph node recurrence in epithelial ovarian cancer: Recurrence with better prognosis?

INTRODUCTION

The aim of this study was to compare overall survival (OS) between women with isolated lymph node recurrence (ILNR) and those with isolated peritoneal localization of recurrence (ICR), in patients managed for epithelial ovarian cancer.

METHODS

Data from 1508 patients with ovarian cancer were collected retrospectively from1 January 2000 to 31 December 2016, from the FRANCOGYN database, pooling data from 11 centres specialized in ovary treatment. Median overall survival was determined using the Kaplan-Meier method. Univariate and multivariate analyses were performed to define prognostic factors of overall survival. Patients included had a first recurrence defined as ILNR or ICR during their follow up.

RESULTS

79 patients (5.2 %) presented with ILNR, and 247 (16.4 %) patients had isolated carcinomatosis recurrence. Complete lymphadenectomy was performed more frequently in the ILNR group vs. the ICR group (67.1 % vs. 53.4 %, p = 0.004) and the number of pelvic lymph nodes involved was higher (2.4 vs. 1.1, p = 0.008). The number of involved pelvic LN was an independent predictor of ILNR (OR = 1.231, 95 % CI [1.074-1.412], p = 0.0024). The 3-year and 5-year OS rates in the ILNR group were 85.2 % and 53.7 % respectively, compared to 68.1 % and 46.8 % in patients with ICR. There was no significant difference in terms of OS after initial diagnosis (p = 0.18). 3- year and 5-year OS rates after diagnosis of recurrence were 62.6 % and 15.6 % in the ILNR group, and 44 % and 15.7 % in patients with ICR (p = 0.21).

CONCLUSION

ILNR does not seem to be associated with a better prognosis in terms of OS.

Salvage lymphadenectomy in recurrent ovarian cancer patients: Analysis of clinical outcome and BRCA1/2 gene mutational status

OBJECTIVE

This study is aimed to analyze the clinical outcome of recurrent ovarian cancer patients bearing isolated lymph-node recurrence (ILNR) who underwent salvage lymphadenectomy (SL). The prognostic role of clinicopathological variables and the mutational status of BRCA1/2 have also been investigated.

METHODS

This retrospective, single-institutional study included women with platinum-sensitive lymph node recurrence underwent to SL between June 2008 and June 2018. Univariate and multivariate analysis was performed to evaluate the impact of clinical parameters, and BRCA1/2 mutational status on post salvage lymphadenectomy progression-free survival (PSL-PFS).

RESULTS

As of June 2019, the median follow-up after SL was 30 months, and the relapse has been documented in 48 (56.5%) patients. In the whole series, the median PSL-PFS was 21 months, and the 3-year PSL-PFS was 36.7%. The median PSL-PFS, according to patients with ILNR (N = 71) versus patients with lymph-nodes and other sites of disease (N = 14), was 27 months versus 12 months, respectively. Univariate analysis of variables conditioning PSL-PFS showed that platinum-free interval (PFI) ≥12 months, normal Ca125 serum levels, and number of metastatic lymph-nodes ≤3 played a statistically significant favorable role. In multivariate analysis, PFI duration ≥12 months and the number of metastatic lymph nodes ≤3 were shown to keep their favorable, independent prognostic value on PSL-PFS.

CONCLUSIONS

In the context of SL, the patients with long PFI and low metastatic lymph node numbers at ILNR diagnosis have the best outcome. The BRCA mutational status seems not associated with clinical variables and PSL-PFS, differently from other sites of disease in ROC patients.

Radiotherapy for isolated recurrent epithelial ovarian cancer: A single institutional experience

AIM

To evaluate the efficacy and toxicity of external beam radiotherapy (RT) for isolated recurrent epithelial ovarian cancer (EOC).

METHODS

Twenty-four isolated recurrent EOC patients treated with RT at Osaka University Hospital between January 2000 and January 2017 were included in the current study. Data regarding the primary or recurrent diseases, follow-up findings, and efficacy or toxicities of RT were collected and retrospectively analyzed. Survival rates were calculated using the Kaplan-Meier method and compared using the log-rank test.

RESULTS

Their median age was 59 years. Most patients had International Federation of Gynecology and Obstetrics stage III-IV diseases at the initial diagnosis. Histologically, serous adenocarcinoma was predominant, followed by clear cell adenocarcinoma. All patients had received at least one regimen of platinum-based chemotherapy; 8 were platinum-sensitive relapse and the others were platinum-resistant. Lymph nodes were the most common sites of recurrence, and the median tumor size was 25.5 mm. The median total dose of RT administered was 54 Gy, with a median daily dose of 2 Gy. RT was well-tolerated, and no patients experienced Grade 3/4 toxicities. The in-field overall response rate was 58.3% (14/24), the median regression rate was -40.2% (range: -100 to 0) and the median survival period after RT was 17 months. The 1-year survival and local progression-free survival rates after RT were 66.7% and 45.8%, respectively.

CONCLUSION

RT showed significant antitumor effect against isolated recurrent EOC without causing severe toxicities. Prospective studies with sufficient statistical power are warranted to further evaluate the role of RT in this patient population.