Suheyla Serdengecti
Istanbul University
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Featured researches published by Suheyla Serdengecti.
Medical Oncology | 2004
Mustafa Ozguroglu; Ahmet Bilici; Hande Turna; Suheyla Serdengecti
In patients with non-Hodgkin’s lymphoma (NHL), there are some well-known tumor-related adverse prognostic factors that may increase the mortality rate. However, secondary factors such as viral hepatitis carriers that may decrease the cure rates are usually ignored. Reactivation of hepatitis B virus (HBV) infection in patients undergoing cytotoxic treatment for NHL is a well-known complication. Charts of 112 patients with NHL were retrospectively analyzed regarding their hepatitis serology, the indirect effects of seropositivity on disease outcome, and the precautions undertaken in these seropositive patients with NHL. Twelve patients (11%) with HBsAg positivity and two patients (1.7%) with antibody to hepatitis C virus positivity were detected. Eight out of 12 patients (67%) with HBsAg positivity and two patients (50%) with anti-HCV positivity showed reactivation of hepatitis during treatment of NHL. No reactivation was detected in four patients seropositive for HBV, who were given lamivudine prophylaxis before the initiation of chemotherapy schedules. Among patients with hepatitis reactivation, two were treated with lamivudine resulting in dramatic improvement and clinical remission of the disease. The remaining six patients with reactivation were left untreated, resulting in four deaths (67%) due to liver failure secondary to HBV and two deaths secondary to delayed treatment of NHL. One patient seropositive for anti-HCV also developed chronic hepatitis C. Determination of hepatitis serology in all patients with NHL before any chemotherapy administration is crucial, but insufficient, if not taken into consideration. In seropositive patients, HBV DNA should be determined and antiviral prophylaxis with lamivudine should be initiated before any treatment.
Medical Oncology | 2000
Mustafa Ozguroglu; Banu Arun; Gokhan Demir; Fuat Demirelli; Nil Molinas Mandel; Evin Büyükünal; Suheyla Serdengecti; Bülent Berkarda
Anemia is a frequent complication of cancer and its treatment. A defect in erythropoietin production has been advocated as being the main cause of anemia in cancer patients. We studied serum erythropoietin levels in 74 patients with solid tumors and in a control group consisting of 20 otherwise healthy individuals without any malignancy, who have only iron deficiency anemia. Serum erythropoietin levels were measured by enzyme immunoassay in cancer patients without anemia (n=34), and in anemic cancer patients (n=40); either receiving chemotherapy (n=21) or not (n=19). Anemic cancer patients were found to have decreased response of erythropoietin for a given hemoglobin level (mean, 40.1±34.7 u/ml), compared with the patients having only iron deficiency anemia (mean, 69.7±68.6 u/ml) (P<0.05). In patients with iron deficiency anemia having no malignancy, erythropoietin response was remarkably high and inversely correlated with the level of hemoglobin (r=−0.69;P=0.05). Although there was no correlation between hemoglobin and erythropoietin response in cancer anemia (r=−0.07), serum levels of erythropoietin were found to be higher in anemic cancer patients (mean, 40.1±34.7 u/ml), compared with cancer patients with normal hemoglobin values (mean, 19.96±18.4 u/ml). There was not any statistically significant difference between erythropoietin levels in anemic cancer patients with or without chemotherapy (mean, 43.7±37.7 u/ml and 41.9±30.08 u/ml respectively;P>0.05). No difference in serum erythropoietin levels were noted in patients treated with cisplatin or non-cisplatin containing regimens (mean, 48.36±33.12 u/ml and 38.55±43.52 u/ml, respectively;P>0.05). In this study, we demonstrated that anemia in cancer patients was caused by blunted erythropoietin response, rather than its quantitative deficiency. Serial measurements, however, should be considered in patients receiving chemotherapy.
American Journal of Clinical Oncology | 1999
Mustafa Ozguroglu; Hande Turna; Gokhan Demir; Alper Döventas; Fuat Demirelli; Nil Molinas Mandel; Evin Büyükünal; Suheyla Serdengecti; Bülent Berkarda
CA-125, a commonly used tumor marker for epithelial ovarian cancer, is a glycoprotein found in normal tissues derived from coelomic epithelia. Increased serum levels of CA-125 have also been found in nongynecologic tumors and nonmalignant diseases involving the peritoneum. A few recent studies and sporadic case reports have reported increased CA-125 levels in patients with non-Hodgkins lymphoma (NHL). In our study, we aimed to evaluate the serum levels of CA-125 in patients with NHL and determine its potential role to show disease activity in NHL. Serum levels of CA-125 were measured in 61 patients with NHL and were found to be correlated with clinical stage, site of involvement, and disease activity.
Clinical and Applied Thrombosis-Hemostasis | 1999
Mustafa Ozguroglu; Banu Arun; Yusuf Erzin; Gokhan Demir; Fuat Demirelli; Nil Molinas Mandel; Evin Büyükünal; Suheyla Serdengecti; Bülent Berkarda
This study was undertaken to investigate a pos sible association of anticardiolipin antibodies (ACLAs) in can cer patients with thromboembolic events. Twenty-five patients with solid tumors complicated with acute thrombosis, 36 cancer patients without any thrombotic events, and a group of 20 healthy volunteers without thrombosis or malignancy were in cluded. The mean age of the cancer patients with and without thrombosis and healthy subjects were 50 years (range 20-75), 45 years (range 23-66), and 40 years (range 20-68), respec tively. Deep venous thrombosis (n = 16) and thrombosis of the central venous port-catheter systems (n = 9) were confirmed by Doppler sonography in all patients. IgG and IgM isotypes of ACLAs were quantitated by enzyme-linked immunosorbent as say with normal levels of <23 GPL and <11 MPL, respectively. Mean values of IgG ACLAs were found similar in cancer pa tients with acute thrombosis (13.8 ± 4.9 GPL), without throm bosis (12.8 ± 5.4 GPL) or in healthy subjects (14.8 ± 5.5 GPL). Although the mean values of IgM ACLAs were within normal limits in all groups, cancer patients with thrombotic events had higher levels of IgM ACLAs (mean = 10.5 ± 2.2 MPL) than cancer patients without thrombosis (mean = 4.6 ± 2.4 MPL) (p = .01). Healthy subjects also had lower levels of IgM ACLAs (mean = 7.1 ± 3.2 MPL) than cancer patients with thrombosis (p = .16). In addition, a higher percentage of cancer patients with or without thrombosis had IgM and IgG ACLA levels above normal limits compared with healthy controls. In con clusion, our study suggests an association between ACLAs or IgG and particularly IgM isotypes and venous thrombosis in malignancy. Identification of cancer patients who are at higher risk for developing thromboembolic events might lead to a better selection of patients for prophylactic anticoagulant therapy.
Journal of Breast Cancer | 2013
Fatih Selcukbiricik; Deniz Tural; Fatih Aydogan; Nuran Senel Bese; Evin Büyükünal; Suheyla Serdengecti
Purpose The aim of this study is to evaluate the effects of prognostic factors on the overall survival (OS) and locoregional control (LC) among male breast cancer (MBC) patients treated at Cerrahpasa Medical School Hospital, along with a review of the related literature. Methods The data of 86 patients treated for MBC from 1973 to 2010 are retrospectively reviewed. Patient demographics and clinical information, including the date of diagnosis, treatment, clinical course, and the date and causes of death are routinely recorded. Results Median follow-up was 66 months. Isolated local-regional recurrence and distant metastases were observed in 15 (17.4%) and 24 (34.1%) of the cases, respectively. The 5-year OS rate was 65.8%; the disease-free survival rate was 72.4%, and the LC rate was 89.7%. The prognostic factors influencing local relapse were the T stage (p=0.002) and the chest wall muscular invasion (p=0.027) in the univariate analysis. The prognostic factors influencing OS were the presence of a positive axillary lymph node (p=0.001) and the T stage (p=0.001) in the univariate analysis. The T stage (p=0.008) and node (N) stage (p=0.038) were significant prognostic factors for OS in the multivariate analyses. Also, the T stage (p=0.034) was found to be significant for LC. Conclusion We found that only the tumor size and lymph node status were independent prognostic factors for survival. In addition, only the tumor size was an independent prognostic factor for locoregional relapse. Modified radical mastectomy and conservative surgical procedures had similar outcomes for LC.
Case reports in oncological medicine | 2013
Deniz Tural; Fatih Selcukbiricik; Feray Günver; Abdülkadir Karışmaz; Suheyla Serdengecti
First described by Hirsch and Helwig in 1961, chondroid syringomas (CSs) are rare, benign tumors of the skin arising from the eccrine sweat glands with tumor differentiation in the epithelial and mesenchymal tissues. They most commonly occur in the head and neck, although they may be also found in the axilla, trunk, limbs, and genitalia. The incidence of CS is <0.01% of all primary skin tumors. Malingnant chondroid syringomas (MCS), which are also called malignant mixed tumors of the skin, are extremely uncommon. MCSs commonly involve the limbs and rarely head and neck. In this article, we present a case of malignant chondroid syringoma localized in the face at the left nasolabial region in the light of literature review.
Asian Pacific Journal of Cancer Prevention | 2012
Fatih Selcukbiricik; Deniz Tural; Evin Büyükünal; Suheyla Serdengecti
OBJECTIVE The prognostic significance of perineural invasion (PNI) in gastric cancer has been previously investigated but not clearly clarified. The objective of our study was to investigate the role of PNI as prognostic factor in patients undergoing curative surgical resection and without distant metastasis in comparison with other clinicopathological factors. METHODS Between 2001 and 2010, 287 cases of gastric adenocarcinoma underwent radical gastrectomy recorded in hospital based registries. PNI was assessed as positive when cancer cells were seen in the perinerium or neural fascicles intramurally. Categorical and continuous variables were summarized using descriptive statistics and compared using chi-square and Mann-Whitney U tests, respectively. Cancer related survival rates were estimated by the Kaplan-Meier method. RESULTS PNI was positive in 211 of 287 cancers (73%), with a positive relation to lymph node metastases and advanced stage (p=0.0001, p=0.0001, respectively), mural invasion, and lymphatic and blood vessel invasion (p=0.0001, p=0.0001, respectively). The median survival of the PNI positive patients was significantly shorter than that of their PNI negative counterparts (24.1 versus 38.2 months, p=0.008). In the multivariate analysis, we detected PNI was an independent prognostic factor (p=0.025, HR=1.21, 95% CL 1.08-2.3) along with classical clinicopathological variables such as lymph node involvement (p=0.001), pT stage (p=0.03), and LVI (p=0.017), but not age, gender, tumour localization, stage, histologic type, and surgery procedure. CONCLUSIONS PNI positivity in gastric cancers was related mural invasion, lymph node involvement, advanced stage and lymphatic and venous blood vessels. The presence of PNI appeared as an independent prognostic factor on survival on multivariate analysis, not influenced by tumor stage, lymph node metastases and other classical factors.
Strahlentherapie Und Onkologie | 2005
Nuran Şenel Beşe; Evin Büyükünal; Mustafa Ozguroglu; Gokhan Demir; Ayse Yildirim; Nil Molinas Mandel; Fuat Demirelli; Suheyla Serdengecti; Ahmet Ober
Background and Purpose:To investigate the role of postoperative concomitant chemoradioimmunotherapy in gastric adenocarcinoma patients.Patients and Methods:59 patients, who underwent total or subtotal gastrectomy, with lymph node involvement, positive microscopic surgical margins or serosal involvement were included in the study. Radiotherapy started concomitantly with chemotherapy and levamisole. Extended-field radiotherapy was given to gastric bed and regional lymphatics via two anterior-posterior/posterior-anterior fields. A total dose of 45 Gy in 25 fractions with a fraction size of 1.8 Gy was planned. In 28 patients (48%) with positive surgical margins a 10-Gy boost dose was given to the anastomosis site. An adjuvant i.v. bolus of 450 mg/m2/day 5-fluorouracil (5-FU) was administered concomitantly during the first 3 days and at the 20th day of irradiation. After completion of radiotherapy, i.v. boluses of 450 mg/m2/day 5-FU and 25 mg/m2/day rescuvorin were continued for 6 months once a week. Levamisole 40 mg/day orally was started at the 1st day of radiotherapy and also continued for 6 months. Median follow-up was 37 months (7–112 months).Results:Median survival was 23 months. Overall 3- and 5-year survival rates amounted to 35% and 14%, respectively. Median survival of the patients with positive surgical margins was 22 months. The 3- and 5-year locoregional control rates were 59% and 55%, respectively. The most common toxicity was upper gastrointestinal system toxicity, which was observed in 42 patients (71%). Four patients (7%) died on account of early toxic effects, and six (10%) could not complete treatment.Conclusion:Although 48% of the study population involved patients with microscopic residual disease, the survival results as a whole were satisfactory. However, due to high toxicity, radiotherapy must be delivered with the most proper techniques along with adequate nutrition and supportive care.Hintergrund und Ziel:Untersuchung der Rolle der postoperativen Radiochemotherapie bei Patienten mit Adenokarzinom des Magens.Patienten und Methodik:59 total oder subtotal operierte Patienten mit Adenokarzinom des Magens, die eine Invasion der Serosaoberfläche, einen Befall der regionären Lymphknoten oder positive Resektionsränder aufwiesen, wurden in die Studie eingeschlossen. Postoperativ wurde eine simultane Radiochemotherapie begonnen. Die Bestrahlung wurde in „Extended-field“-Technik über zwei Felder (anterior-posterior und posterior-anterior) mit einer Gesamtdosis von 45 Gy in 25 Fraktionen zu 1,8 Gy appliziert. 28 Patienten (48%) mit positiven Resektionsrändern erhielten zusätzlich einen 10-Gy-Boost auf den Anastomosenbereich. Die adjuvante Chemotherapie mit einem 450-mg/m2-Bolus 5-Fluorouracil (5-FU) wurde an den ersten 3 Tagen verabreicht und am 20. Tag wiederholt. Nach der Strahlentherapie erhielten die Patienten 450 mg/m2 5-FU i.v. und 25 mg/m2 Leukovorin i.v. wöchentlich für weitere 6 Monate. Die Immunmodulation mit 40 mg Levamisol p.o. wurde am 1. Bestrahlungstag begonnen und für 6 Monate weitergeführt. Der mediane Nachuntersuchungszeitraum lag bei 37 Monaten (7–112 Monate).Ergebnisse:Die mediane Überlebenszeit betrug 23 Monate. Die 3- und 5-Jahres-Gesamtüberlebensraten lagen bei 35% und 14%. Patienten mit positiven Resektionsrändern wiesen eine mediane Überlebenszeit von 22 Monaten auf. Die lokoregionale Kontrollrate betrug 59% nach 3 Jahren und 55% nach 5 Jahren. Die häufigsten Nebenwirkungen der Behandlung waren gastrointestinale Beschwerden bei 42 Patienten (71%). Vier Patienten (7%) starben infolge der Nebenwirkungen. Sechs Patienten konnten die Behandlung aufgrund von Nebenwirkungen nicht beenden.Schlussfolgerung:Obwohl 48% der Patienten in dieser Studie einen mikroskopisch nachweisbaren Resttumor aufwiesen, war die beobachtete Überlebenszeit verhältnismäßig gut. Aufgrund der hohen Toxizität sollte die Behandlung jedoch sehr sorgfältig unter Einsatz angemessener supportiver Maßnahmen durchgeführt werden.
World Journal of Gastroenterology | 2013
Fatih Selcukbiricik; Evin Büyükünal; Deniz Tural; Mustafa Ozguroglu; Fuat Demirelli; Suheyla Serdengecti
AIM To evaluate the location, histopathology, stages, and treatment of gastric cancer and to conduct survival analysis on prognostic factors. METHODS Patients diagnosed with of stomach cancer in our clinic between 2000 and 2011, with follow-up or a treatment decision, were evaluated retrospectively. They were followed up by no treatment, adjuvant therapy, or metastatic therapy. We excluded from the study any patients whose laboratory records lacked the operating parameters. The type of surgery in patients diagnosed with gastric cancer was total gastrectomy, subtotal gastrectomy or palliative surgery. Patients with indications for adjuvant treatment were treated with adjuvant and/or radio-chemotherapy. Prognostic evaluation was made based on the parameters of the patient, tumor and treatment. RESULTS In this study, outpatient clinic records of patients with gastric cancer diagnosis were analyzed retrospectively. A total of 796 patients were evaluated (552 male, 244 female). The median age was 58 years (22-90 years). The median follow-up period was 12 mo (1-276 mo), and median survival time was 12 mo (11.5-12.4 mo). Increased T stage and N stage resulted in a decrease in survival. Other prognostic factors related to the disease were positive surgical margins, lymphovascular invasion, perineural invasion, cardio-esophageal settlement, and the levels of tumor markers in metastatic disease. No prognostic significance of the patients age, sex or tumor histopathology was detected. CONCLUSION The prognostic factors identified in all groups and the proposed treatments according to stage should be applied, and innovations in the new targeted therapies should be followed.
Medical Oncology | 2002
Gokhan Demir; Sedef Belentepe; Mustafa Ozguroglu; Aykut Ferhat Celik; Nur Sayhan; Salim Tekin; Nil Molinas Mandel; Evin Büyükünal; Suheyla Serdengecti
Family history and hepatitis B virus (HBV) infection have been identified as risk factors for hepatocellular carcinoma. We report hepatocellular carcinoma (HCC) diagnosed at the same time in identical twin brothers. Serological analyses of the patients showed that both were chronically infected with HBV. Molecular analyses of the tumor specimens confirmed loss of heterozygocity of the Rb gene region. Both of the patients were unresponsive to chemotherapy and died within the same month with an interval of 1 wk. With a review of the current literature, we discuss the role of HBV infection and genetic factors on hepatic carcinogenesis.