Browsing by Author "Tanik, Serhat"

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Comparison of Cystoscopy With Diffusion-Weighted Magnetic Resonance Images Used in the Diagnosis and Follow-Up of Patients With Bladder Tumors
(Asian Pacific Organization Cancer Prevention, 2010) Ceylan, Kadir; Taken, Kerem; Gecit, Ilhan; Pirincci, Necip; Gunes, Mustafa; Tanik, Serhat; Karaman, Ihsan
Purpose: To compare diffusion-weighted magnetic resonance imaging (DW-MRI) with cystoscopy in the diagnosis and follow-up of patients with bladder tumor and to investigate any histopathological correlation. Materials and Methods: Totally 59 patients, between 31-85 years (mean age 60 +/- 13) referred to our clinic due to a hematuria complaint were enrolled and evaluated by upper urinary system pathology and then DW-MRI (average 7 days) and cystoscopy. Apparent diffusion coefficients (ADCs) of images were calculated. Results: While a mass in bladder was determined with cystoscopy in 43 out of 59 patients, the mass was not deternined in 16 of the patients(n=34 malign, n=9 benign). While a mass was determined in 40 out of 59 patients with DW-MRI, the mass was not determined in 19 of the patients(n=40 malign, n=19 benign). Regarding ADC values, mean ADC values of 34 patients who were diagnosed with a bladder tumor (1.05 +/- 0.22 x 10(-3)mm(2)/s), were significantly lower than the mean ADC values obtained from the normal bladder wall (1.830 +/- 0.18 x 10(-3)mm(2)/s) whereas a statistically significant difference was found (p<0.001). ADC values in 9 patients with a benign lesion (1,73 +/- 0.12 x 10(-3)mm(2)/s), were not found statistically different from the mean ADC values obtained from the normal bladder wall (1.78 +/- 0.2x10(-3)mm(2)/s) (p>0.05). A significant difference was determined between ADC values of benign lesions and the ADC values of malign lesions (p<0.001). Conclusions: According to cystoscopy, values of DW-MRI's related with sensitivity, specificity and accuracy were found, respectively 90%, 93% and 91%. As the DW-MRI is a non-invasive and a rapid technique, and does not contain ionized radiation and because it is accepted as an important marker of tumor cellularity, it may be used as an alternative in future diagnosis and follow-up of bladder tumors.
Complete Duplication of the Bladder and Urethra in the Coronal Plane: Case Report With Review of the Literature
(Karger, 2013) Pirincci, Necip; Gecit, Ilhan; Gunes, Mustafa; Tanik, Serhat; Ceylan, Kadir
Complete duplication of the bladder and urethra without other congenital anomalies is a very rare congenital anomaly. We report the case of an 8-year-old boy with complete duplication of the bladder and urethra in the coronal plane, without any other associated congenital anomalies and without complaint associated with the urinary tract. Copyright (C) 2012 S. Karger AG, Basel
Conservative Approach in the Treatment of Renal Trauma in Children
(Karger, 2014) Pirincci, Necip; Kaba, Mehmet; Gecit, Ilhan; Gunes, Mustafa; Tanik, Serhat; Ceylan, Kadir
Objective: Our aim was to evaluate the role of a conservative approach in the treatment of renal trauma in the pediatric age group. Materials and Methods: A total of 31 pediatric patients with renal trauma (male = 25, female = 6) in whom we used a conservative approach in our clinic between the years 2002 and 2010 were included in the study. Patients were assessed according to the type of trauma, type of treatment, findings of radiological imaging, concomitant other organ injuries and complications occurring during follow-up. Results: Surgery was required in just 4 of 31 pediatric patients who were treated with the conservative approach. Of the patients who underwent surgery, only one child needed nephrectomy. No complications were detected in the clinical and radiological follow-up of the patients who received the conservative approach. Conclusions: The main objective in the treatment of renal trauma occurring in childhood is to protect the kidneys. If the hemodynannic findings are stable, a conservative approach should be the first preferred method of treatment in every grade of renal trauma that can occur in childhood. Copyright (C) 2013 S. Karger AG, Basel
Cutaneous Ewing's Sarcoma Secondary To Chemotherapy Given for Testis Tumor: Case Report
(Elsevier Sci Ltd, 2014) Tanik, Serhat; Zengin, Kursad; Albayrak, Sebahattin; Eryilmaz, Recep; Yilmaz, Deniz; Pirincci, Necip
INTRODUCTION: Testicular cancer has high cure rates, especially after the adjuvant use of chemotherapy. Secondary tumors may develop months and years after the primary tumor. We aimed to report a case of cutaneous Ewing's sarcoma at the site of surgery 3 years after BEP chemotherapy. PRESENTATION OF CASE: 21 year old male underwent radical orchiectomy in 2008. After one year surgical site complaints brought him to same hospital. A limited surgical resection was made. As his complaints continued he applied to our clinic. We resected the lesion with a 5 cm safety margin with the light of previous medical history. Pathology revealed cutaneous Ewing's sarcoma, and patient received VACD-IE chemotherapy. He is free of recurrence till now. DISCUSSION: Chemotherapy may cause secondary cancer especially in long term. In this case secondary tumor is diagnosed three years after surgery. Patient underwent therapeutic surgery and received chemotherapy (VACD-IE) for secondary Ewing's sarcoma. Early diagnosis and definitive treatment provide recurrence free survival in the patient. CONCLUSION: Secondary tumors can emerge months or years after primary tumor therapies, and are not related with the primary tumors. Any lesion or sign should be investigated carefully. Early diagnosis and correct treatment could prevent dramatic results. (C) 2014 The Authors. Published by Elsevier Ltd. on behalf of Surgical Associates Ltd. This is an open access article under the CC BY-NC-ND license
Levels of Serum Trace Elements in Renal Cell Carcinoma Cases
(Asian Pacific Organization Cancer Prevention, 2013) Pirincci, Necip; Gecit, Ilhan; Gunes, Mustafa; Kaba, Mehmet; Tanik, Serhat; Yuksel, Mehmet Bilgehan; Demir, Halit
Trace elements which are essential components of biological structures may also be toxic when present at levels above the amounts required for biological function. In our study, trace element levels were measured with furnace atomic absorption spectrophotometry in 33 newly diagnosed renal cell carcinoma cases (preoperative) and 32 healthy controls. When compared with the control group, it was found that the levels of cadmium (Cd), lead (Pb) were higher and the levels of zinc (Zn), iron (Fe) and manganese (Mn) were lower in the patient group. These changes may be important in the formation of renal cell carcinoma, a question which should be explored with postoperative comparative studies.
Serum Adenosine Deaminase, Catalase and Carbonic Anhydrase Activities in Patients With Bladder Cancer
(Elsevier Espana, 2012) Pirincci, Necip; Gecit, Ilhan; Gunes, Mustafa; Yuksel, Mehmet Bilgehan; Kaba, Mehmet; Tanik, Serhat; Aslan, Mehmet
OBJECTIVES: The relationship between adenosine deaminase and various cancers has been investigated in several studies. However, serum adenosine deaminase activity and carbonic anhydrase and catalase activities in patients with bladder cancer have not previously been reported. Therefore, the aim of this study was to measure serum adenosine deaminase, carbonic anhydrase and catalase activities in patients with bladder cancer. MATERIALS AND METHODS: Forty patients with bladder cancer and 30 healthy controls were enrolled in the study. Serum adenosine deaminase, carbonic anhydrase and catalase activities were measured spectrophotometrically. RESULTS: Serum adenosine deaminase, carbonic anhydrase and catalase activities were significantly higher in patients with bladder cancer than controls (all significant, p < 0.001). CONCLUSIONS: These markers might be a potentially important finding as an additional diagnostic biochemical tool for bladder cancer.
Serum Prolidase Activity, Oxidative Stress, and Antioxidant Enzyme Levels in Patients With Renal Cell Carcinoma
(Sage Publications inc, 2016) Pirincci, Necip; Kaba, Mehmet; Gecit, Ilhan; Gunes, Mustafa; Yuksel, Mehmet Bilgehan; Tanik, Serhat; Demir, Halit
Objectives: Prolidase is a member of the matrix metalloproteinase family. It plays a vital role in collagen turnover, matrix remodeling, and cell growth. Reactive oxygen species (ROS) have been implicated in the pathogenesis of various diseases, including cancers. Oxidative stress can cause tumor angiogenesis and may be carcinogenic. However, the relationship between antioxidant capacity and various cancers has been researched in several clinical trials. In our study, we aimed to identify serum prolidase activity, oxidative stress, and antioxidant enzyme levels in patients with renal tumors and to evaluate their relationships with each other. Materials and Methods: A total of 37 male patients with renal cell cancer and with a mean age of 56.28 +/- 3.1 were included in the study. The control group comprising 36 male patients (mean age 56.31 +/- 2.9) was randomly selected among the volunteers. Serum samples for measurement of superoxide dismutase (SOD), glutathione peroxidase (GSHPx), glutathione-S-transferase (GST), malondialdehyde (MDA), glutathione (GSH), and prolidase levels were kept at -20 degrees C until they were used. Results: Serum prolidase activity and MDA levels were significantly higher in renal cancer patients than in controls (all, p < 0.05), while SOD, GSHPx, and GST levels were significantly lower (p < 0.05). Conclusion: Our results indicate that increased prolidase seems to be related to increased oxidative stress along with decreased antioxidant levels in renal cancer.
Tissue Damage in Kidney, Adrenal Glands and Diaphragm Following Extracorporeal Shock Wave Lithotripsy
(Sage Publications inc, 2014) Gecit, Ilhan; Kavak, Servet; Oguz, Elif Kaval; Pirincci, Necip; Gunes, Mustafa; Kara, Mikail; Tanik, Serhat
This study was designed to investigate whether exposure to short-term extracorporeal shock wave lithotripsy (ESWL) produces histologic changes or induces apoptosis in the kidney, adrenal glands or diaphragm muscle in rats. The effect of shock waves on the kidney of male Wistar rats (n = 12) was investigated in an experimental setting using a special ESWL device. Animals were killed at 72 h after the last ESWL, and the tissues were stained with an in situ Cell Death Detection Kit, Fluorescein. Microscopic examination was performed by fluorescent microscopy. Apoptotic cell deaths in the renal tissue were not observed in the control group under fluorescent microscopy. In the ESWL group, local apoptotic changes were observed in the kidney in the area where the shock wave was focused. The apoptotic cell deaths observed in the adrenal gland of the control group were similar to those observed in the ESWL groups, and apoptosis was occasionally observed around the capsular structure. Apoptotic cell deaths in the diaphragm muscle were infrequently observed in the control group. Apoptosis in the ESWL group was limited to the mesothelial cells. This study demonstrated that serious kidney, adrenal gland and diaphragm muscles damage occurred following ESWL, which necessitated the removal of the organ in the rat model. It is recognized that the ESWL complications related to the kidney, adrenal gland and diaphragm muscles are rare and may be managed conservatively.