Araştırma Çıktıları

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    The Prognostic Significance of Complete Response Rates in Patients with Extensive Stage Small Cell Lung Cancer
    (KARE PUBL, 2019-01-01) Sedef, Ali Murat; Calikusu, Zuleyha; Bahceci, Aykut; Gokcay, Serkan; Sumbul, Ahmet Taner
    OBJECTIVE Small cell lung cancer (SCLC) is the most aggressive type of lung cancer. Platinum-etoposide chemotherapy combination is used as first line treatment. The aim of this trial is evaluate the effect of complete response rates and clinical features in patients with extensive stage (ES) SCLC. METHODS In this retrospective study, a total of 117 patients from four different oncology centers in Turkey between 2011 and 2017 were divided into 2 groups, namely, patients with complete response (group 1) and those with no complete response (group 2) after platin-etoposide combination therapy. RESULTS The median age of the patients was 61 (range 38-81) years. The median follow-up time was 12 months and 95 (81\%) patients died. Progression-free survival (PFS) and overall survival (OS) were estimated, respectively, as 8 and 13 months. Overall survival of group 1 patients was statistically significantly better than the group 2 (16 versus 10 months respectively and p=0.00). The overall survival of patients who had late recurrent disease (>6 mo.) was statistically significantly better than the early ones (<6 mo) (19 versus 14 months respectively and p=0,008). CONCLUSION Complete response and recurrent free time were the prognostic factors for ES SCLC patients in our study
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    Correlation between 18F-FDG Positron-Emission Tomography 18F-FDG Uptake Levels at Diagnosis and Histopathologic and Immunohistochemical Factors in Patients with Breast Cancer
    (AVES, 2016-01-01) Ugurluer, Gamze; Yavuz, Sinan; Calikusu, Zuleyha; Seyrek, Ertugrul; Kibar, Mustafa; Serin, Meltem; Ersoz, Canan; Demircan, Orhan
    Objective: In this study, we aimed to determine the correlation between pretreatment-staging 18F-FDG total body positron-emission tomography/computed tomography (PET/CT) maximum standardized uptake value (SUVmax) levels and histopathologic and immunohistochemical predictive and prognostic factors in patients with breast cancer. Materials and Methods: One hundred thirty-nine women with breast cancer who were treated between 2009 and 2015 at our hospital and who had pretreatment-staging PET/CT were included in the study. SUVmax levels and histopathologic and immunohistochemical results were compared. Results: The median age was 48 years (range, 29-79 years). The mean tumor diameter was 33.4 mm (range, 7-120 mm). The histology was invasive ductal carcinoma in 80.6\% of the patients. In the univariate analysis, SUVmax levels were significantly higher in patients with invasive ductal carcinoma
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    Isolated fetal liver calcifications
    (GALENOS YAYINCILIK, 2012-01-01) Pata, Ozlem; Gunduz, Nevzat Melih; Unlu, Cihat
    Hepatic calcification in the fetus is considered an uncommon occurrence and the clinical significance is not fully known. We describe five cases with isolated hepatic calcification. The causes and postnatal outcome of the fetal liver calcifications detected by ultrasound imaging are discussed. Isolated fetal liver calcifications with no aneuploidy and infection have a good prognosis.
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    Coexistence of adenomyosis, adenocarcinoma, endometrial and myometrial lesions in resected uterine specimens
    (SPANDIDOS PUBL LTD, 2018-01-01) Tetikkurt, Seza; Celik, Elif; Tas, Hazal; Cay, Tugce; Isik, Selman; Usta, Abdullah Taner
    The present study was conducted to identify endometrial and myometrial lesions coexisting with adenomyosis, and to evaluate the clinicopathological characteristics of endometrial adenocarcinomas associated with adenomyosis. A retrospective analysis of the resected uterine specimens of 319 patients with adenomyosis admitted between January 1, 2014 and August 1, 2017 was performed. The endometrial and myometrial lesions coexisting with adenomyosis were evaluated. The clinicopathological prognostic factors, including tumor grade, myometrial invasion, lymphovascular space involvement, lymph node invasion, pathological stage and recurrence, were analysed. For data analysis, the Chi-squared test was used and a P-value of <0.05 was considered to indicate statistically significant differences. The mean age of the patients was 52.1 years. A total of 32 patients had endometrial carcinoma associated with adenomyosis. In addition to endometrioid adenocarcinoma of different grades, rare clear cell carcinoma cases were also observed. Two cases of malignant mesenchymal tumors (one low-grade endometrial stromal sarcoma and one leiomyosarcoma) were also diagnosed. Therefore, patients presenting with abnormal uterine bleeding should undergo thorough evaluation for the presence of adenomyosis and/or Iciomyoma(s). Although the cases of endometrial adenocarcinoma associated with adenomyosis generally had a good prognostic outcome, there were also rare cases of patients with agressive tumor morphology. The inflammatory and tissue response arising around the foci of adenomyosis generate a preventive mechanism against the invasion of adenocarcinomas coexisting with adenomyosis. This response is likely the primary mechanism underlying the good clinical course of these tumors. Therefore, the presence of adenomyosis may be an important factor for the determination of prognosis.
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    Prognostic factors, survival outcomes, and surgical practices when dealing with uterine sarcomas: 8 years' clinical experience
    (GALENOS YAYINCILIK, 2019-01-01) Meseci, Elif; Naki, Mehmet Murat
    Objective: To determine the clinical and pathologic characteristics, prognostic factors, surgical practice, adjuvant therapies, and survival outcomes of patients with uterine sarcoma diagnosed and treated in our institution. Material and Methods: Patients diagnosed and treated for uterine sarcomas at our institution from 2009 to 2017 were retrospectively evaluated. All histologic slides from the specimens underwent a thorough pathologic review by a gynecologic pathologist. The following variables were assessed: age, family history of cancer, smoking status, age of menarche, parity, age at first delivery, related symptoms, clinical staging, histologic type, treatment received, disease-free period, and the time and site of recurrence, as well as treatment of the latter and overall survival. Results: Ten patients were diagnosed as having leiomyosarcoma, a further 10 patients had malignant mixed mullerian tumors, and five had endometrial stromal sarcoma
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    Vascular Endothelial Growth Factor and Thrombospondin-1 mRNA Expression in Bladder Tumors: Correlation with Histopathology and Prognosis
    (GALENOS YAYINCILIK, 2019-01-01) Ozveren, Bora; Turkeri, Levent
    Objective: The purpose of this study was to determine genetic expression levels of vascular endothelial growth factor (VEGF) and thrombospondin-1 (TSP-1) in fresh bladder tumor specimens and evaluate their relationship with tumor histopathological features and their prognostic value in recurrence and progression in patients with bladder cancer. Materials and Methods: Patients who were treated for urothelial cancer of the bladder and followed for at least 6 months were included in this retrospective study. Following RNA isolation from fresh tumor tissue samples recovered from transurethral resection or radical cystectomy specimens, VEGF and TSP-1 mRNA expression was analysed by reverse transcription polymerase chain reaction (RT-PCR). The findings were examined in relation to the histopathological parameters and recurrence and progression rates of the respective tumors. Results: Sixty-eight patients were included in the study. Mean follow-up time was 22.6 months. In patients with non-muscle-invasive urothelial bladder cancer (NMIBC), rates of recurrence and progression were 64\% and 35\%, respectively. RT-PCR analyses revealed VEGF mRNA expression in 29 patients (43\%) and TSP-1 mRNA expression in 22 patients (32\%). Recurrence and progression were observed during follow-up in 64\% and 24\% of the 25 NIMBC patients with positive VEGF expression, while these rates were 63\% and 30\% among the 30 NIMBC patients with no VEGF expression, respectively. Rates of recurrence and progression during follow-up were 70\% and 30\% among NIMBC patients with positive TSP-1 expression and 60\% and 26\% among patients with no TSP-1 mRNA expression, respectively. Conclusion: In this study, VEGF and TSP-1 mRNA expression was not associated with histological grade or stage of bladder cancer. There was no difference in VEGF expression in tumor tissues from NIMBC patients with or without disease recurrence. Though lacking statistical significance, a positive correlation between TSP-1 expression and tumor recurrence and progression was seen among the NIMBC patients in our study. Although stimulatory and inhibitory factors are known to regulate angiogenesis, no definitive conclusions have been reached regarding their mechanism of action or the prognostic significance of their up-or down-regulation.