Investigator

Nurettin Boran

University Of Health Sciences

NBNurettin Boran
Papers(7)
High-grade endometria…Neoadjuvant chemother…The effect of adjuvan…Assessment of the dif…A novel marker in the…Defining the relation…Prognostic factors of…
Collaborators(10)
Yaprak UstunTayfun ToptasCANER ÇAKIRCigdem KilicTaner TuranGunsu Kimyon ComertFatih KilicBURAK ERSAKOzlem Moraloglu TekinIsin Ureyen
Institutions(5)
University Of Health …Saglik Bilimleri Univ…Kutahya Saglik Biliml…Ankara Bilkent City H…Mraniye Eitim Ve Arat…

Papers

High-grade endometrial stromal sarcoma versus undifferentiated uterine sarcoma: a Turkish uterine sarcoma group study-001

Prognostic factors associated with high-grade endometrial stromal sarcoma (HGESS) and undifferentiated uterine sarcoma (UUS) have not been distinctly determined due to the repetitive changes in the World Health Organization (WHO) classification. We aimed to compare clinicopathologic features and outcomes of patients with HGESS with those of patients with UUS. A multi-institutional, retrospective, cohort study was conducted including 71 patients, who underwent surgery at 13 centers from 2008 to 2017. An experienced gynecopathologist from each institution re-evaluated the slides of their own cases according to the WHO The median disease-free survival (DFS) for HGESS and UUS was 12 months and 6 months, respectively. While the median overall survival was not reached in HGESS group, it was 22 months in the UUS group. Kaplan-Meier analyses revealed that patients with UUS had a significantly poorer DFS than those with HGESS (p = 0.016), although OS did not differ between the groups (p = 0.135). Lymphovascular-space involvement (LVSI) was the sole significant factor associated with progression, recurrence or death for HGESS (Hazard ratio: 9.353, 95% confidence interval: 2.539-34.457, p = 0.001), whereas no significant independent factor was found for UUS. UUS has a more aggressive behavior than HGESS. While no significant predictor of prognosis was found for UUS, LVSI is the sole independent prognostic factor for HGESS, with patients 9.3 times more likely to experience refractory/progressive disease, recurrence or death.

A novel marker in the ovarian preservation approach to endometrial cancer: systemic immune inflammatory index

This study aims to to evaluate the frequency of ovarian involvement in endometrial cancer patients aged 50 years and younger, identify associated clinicopathological factors, and uniquely assess the role of the Systemic Immune-Inflammatory Index (SII) in predicting ovarian involvement. Patients aged 50 years and younger diagnosed with endometrial cancer between 1992 and 2022 were retrospectively analyzed. Two groups were formed based on adnexal involvement: those with (ovarian metastasis or synchronous ovarian cancer) and without adnexal involvement. Clinicopathological predictors of adnexal involvement were evaluated. Preoperative complete blood count values (platelet, leukocyte, lymphocyte, and neutrophil counts) were used to calculate inflammatory indices: PLR (platelet-to-lymphocyte ratio), NLR (neutrophil-to-lymphocyte ratio), and SII (neutrophil × platelet / lymphocyte). A two-group analysis was performed based on the cut-off values of statistically significant parameters. Univariate and multivariate logistic regression analyses were conducted. Among 205 patients, histopathological ovarian metastasis was identified in 5.9% (n=12), and synchronous ovarian tumors in 2.4% (n=5). Significant differences were observed in neutrophil counts, NLR, and SII values between the groups (p<0.05). ROC analysis showed the optimal SII cut-off value as 992.58, with 70% sensitivity and 76% specificity (AUC=0.726). Ovarian involvement was significantly more frequent in patients with SII ≥ 992 (p<0.05). Univariate analysis revealed that myometrial invasion, LVSI, cervical stromal invasion, lymph node metastasis, omental involvement, grade of tumor, NLR and SII were significantly associated with ovarian involvement (p<0.05). Multivariate analysis identified histological grade, myometrial invasion, pelvic lymph node metastasis and SII as independent risk factors (p<0.05). Ovarian involvement is uncommon in patients under 50 years of age with low-grade tumors, absence of myometrial invasion, negative pelvic lymph nodes, and preoperative SII < 992.58. Ovarian-sparing surgery may be a safe option in selected cases, and SII could serve as a valuable index in guiding ovarian preservation decisions.

Defining the relationship between ovarian adult granulosa cell tumors and synchronous endometrial pathology: Does ovarian tumor size correlate with endometrial cancer?

Abstract Objective The main feature of adult granulosa cell tumors (AGCT) is their capacity to secrete hormones, with nearly all of them capable of synthesizing oestradiol. The primary goal of this study is to identify synchronized endometrial pathologies, particularly endometrial cancer, in AGCT patients who had undergone a hysterectomy. Materials and Methods The study cohort comprised retrospectively of 316 AGCT patients from 10 tertiary gynecological oncology centers. AGCT surgery consisted of bilateral salpingo‐oophorectomy, hysterectomy, peritoneal cytology, omentectomy, and the excision of any suspicious lesion. The median tumor size value was used to define the relationship between tumor size and endometrial cancer. The relationship between each value and endometrial cancer was evaluated. Results Endometrial intraepithelial neoplasia, or hyperplasia with complex atypia, was detected in 7.3% of patients, and endometrial cancer in 3.1% of patients. Age, menopausal status, tumor size, International Federation of Gynecology and Obstetrics stage, ascites, and CA‐125 level were not statistically significant factors to predict endometrial cancer. There was no endometrial cancer under the age of 40, and 97.8% of women diagnosed with endometrial hyperplasia were over the age of 40. During the menopausal period, the endometrial cancer risk was 4.5%. Developing endometrial cancer increased to 12.1% from 3.2% when the size of the tumor was &gt;150 mm in menopausal patients ( p  = 0.036). Conclusion Endometrial hyperplasia, or cancer, occurs in approximately 30% of AGCT patients. Patients diagnosed with AGCT, especially those older than 40 years, should be evaluated for endometrial pathologies. There may be a relationship between tumor size and endometrial cancer, especially in menopausal patients.

Prognostic factors of adult granulosa cell tumors of the ovary: a Turkish retrospective multicenter study

To define the clinical, histopathological features and the prognostic factors affecting survival in patients with adult granulosa cell tumors of the ovary (AGCT). A 322 patients whose final pathologic outcome was AGCT treated at nine tertiary oncology centers between 1988 and 2021 participated in the study. The mean age of the patients was 51.3±11.8 years and ranged from 21 to 82 years. According to the International Federation of Gynecology and Obstetrics 2014, 250 (77.6%) patients were stage I, 24 (7.5%) patients were stage II, 20 (6.2%) patients were stage III, and 3 (7.8%) were stage IV. Lymphadenectomy was added to the surgical procedure in 210 (65.2%) patients. Lymph node involvement was noted in seven (3.3%) patients. Peritoneal cytology was positive in 19 (5.9%) patients, and 13 (4%) had metastases in the omentum. Of 285 patients who underwent hysterectomy, 19 (6.7%) had complex hyperplasia with atypia/endometrial intraepithelial neoplasia, and 8 (2.8%) had grade 1 endometrioid endometrial carcinoma. It was found that 93 (28.9%) patients in the study group received adjuvant treatment. Bleomycin, etoposide, cisplatin was the most commonly used chemotherapy protocol. The median follow-up time of the study group was 41 months (range, 1-276 months). It was noted that 34 (10.6%) patients relapsed during this period, and 9 (2.8%) patients died because of the disease. The entire cohort had a 5-year disease-free survival (DFS) of 86% and a 5-year disease-specific survival of 98%. Recurrences were observed only in the pelvis in 13 patients and the extra-abdominal region in 7 patients. The recurrence rate increased 6.168-fold in patients with positive peritoneal cytology (95% confidence interval [CI]=1.914-19.878; p=0.002), 3.755-fold in stage II-IV (95% CI=1.275-11.063; p=0.016), and 2.517-fold in postmenopausal women (95% CI=1.017-6.233; p=0.046) increased. In this study, lymph node involvement was detected in 3.3% of patients with AGCT. Therefore, it was concluded that lymphadenectomy can be avoided in primary surgical treatment. Positive peritoneal cytology, stage, and menopausal status were independent prognostic predictors of DFS.

18Works
7Papers
60Collaborators