Browsing by Author "Yilmaz, Y."

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Bazex Syndrome: Acrokeratosis Paraneoplastica in Association With Simultaneous Multiple Genitourinary Tumors
(Elsevier Inc., 2000) Atilla, M.K.; Yilmaz, Y.; Bekerecioglu, M.; Akpolat, N.; Kösem, M.; Aydin, S.
We report a patient with Bazex (Bazex-Dupre-Christol) syndrome in association with multifocal basal cell carcinoma, epidermoid carcinoma of the lung, adenocarcinoma of the prostate, and possibly undifferentiated carcinoma of the bladder. To our knowledge, this is the first report of a patient with Bazex syndrome that consisted of four tumors, including two genitourinary tumors. (C) 2000 Elsevier Science Inc.
Can Ldh Activity in Spermatic Vein Indicate Testicular Damage? a Preliminary Report
(Akademiai Kiado Rt., 1998) Odabaş, Ö.; Yilmaz, Y.; Atilla, M.K.; Tarakçioǧlu, M.; Aydin, S.
We aimed to investigate the relationship between varicocele and lactic dehydrogenase (LDH), an intracellular enzyme that indicates cellular damage. LDH levels were measured in the blood samples of 17 oligoasthenospermic infertile patients with varicocele which were obtained synchronously from spermatic and peripheral veins during operation. Sperm counts ranged from 1 to 74 million/ml, while motility ranged from 10% to 60%. LDH level in spermatic vein was found statistically higher than the level in peripheral vein (p= 0.042). There was no correlation between sperm counts and LDH level in spermatic vein. We found a significant increase in spermatic vein LDH level in varicocele. We think that further studies are needed to reveal the relationship between spermatic vein LDH level and varicocele.
Determining the Structural Properties and Approaches To Agricultural Applications of Existing Vineyards in Some Towns of Siirt Province
(Centenary University, 2020) Gazioğlu Şensoy, R.İ.; Kisaca, G.; Baş, E.Ö.; Yilmaz, Y.
This study was carried out the grape producers representing some villages of Şirvan, Tillo, Pervari, and Central town of Siirt Province; With the 37 questions directed within the scope of the survey, the current situation and problems of the region in viticulture applications were determined in 2019. The data were obtained by surveying 100 producers. Within the scope of the study, producers were asked questions in order to determine the structural properties of current viticulture enterprises and their approaches to agricultural practices; the results were determined as percentage values. It was observed that the average age of the producers participating in the survey was between 40-60 years of age, the overall education level was low; the majority of the land belonged to the producer and passed through the inheritance. In addition, according to the results of the survey, it was determined that the most common cultivar was the local cv. Tayifi and that the producers were not satisfied with their earnings levels. It is observed that there is not enough level of awareness about soil analysis; therefore, plant fertilizing activities are done irregularly. Local viticulture is in the form of family business. Producers stated that they are not members of cooperatives or unions and stated that they often consult with other farmers when they encounter any problems in their production stages. The level of utilization of agricultural subsidies and other social incentives by the state also appears at lower levels. With this research, the problems encountered in the region have been tried to be identified and solutions to solve these problems are presented. The study is the first study in the region obtained directly from the viticulture producers by using the survey method. © 2020, Centenary University. All rights reserved.
Evaluation of 42 Patients With Chronic Abacterial Prostatitis: Are There Any Underlying Correctable Pathologies
(Akademiai Kiado Rt., 1998) Atilla, M.K.; Sargin, H.; Odabaş, Ö.; Yilmaz, Y.; Aydin, S.
Forty-two young men with abacterial prostatitis underwent physical examination, semen analyses, rectal US (TRUS) and magnetic resonance imaging (MRI) of the pelvis. Findings on TRUS showed no distinct differences like capsular irregularity, dilatation of the seminal vesicles and calcified foci in the prostate. In MRI pathologic conditions were noted as transitional zone cysts, prostatic utricle cysts and abscesses of the seminal vesicles. MRI had been found superior to TRUS in imaging the prostate and to predict associated pathologic conditions. It is also concluded that some additional factors as a cause of prostatitis must be determined in patients with chronic abacterial prostatitis.
Experimental Testicular Torsion and Its Effects on the Contralateral Testicle
(1997) Aydin, S.; Uǧraş, S.; Odabaş, Ö.; Yilmaz, Y.; Atilla, M.K.; Yeǧin, E.
Objective: Following experimental unilateral torsion of the testis the histologic effects of unilateral testicular torsion on the contralateral testis were investigated. Materials and methods: Utilizing detorsion or orchiectomy at 4 hours and 8 hours after torsion, the effects of early and late treatment modalities on the contralateral testicle were observed. Results: Morphometry of the contralateral testis revealed some alterations including focal sclerosis, decrease in mean seminiferous tubular diameter and a marked increase of the Leydig cells in some subgroups. Conclusion: In spite of some changes, definite evidence for contralateral damage due to ipsilateral torsion contributing to male infertility was hardly observed.
Fibroepithelial Polyp of the Ureter Associated With an Adjacent Ureteral Calculus
(1997) Uǧras, S.; Odabaş, Ǒ.; Aydin, S.; Yilmaz, Y.
Ureteral fibroepithelial polyps are rare benign tumours. Sometimes an ureteric calculus may be seen, proximal to the polyp. We describe a case of fibroepithelial polyp (FEP) associated with a calculus in the distal part of the right ureter. To our knowledge this is the first ureteral FEP reported in the literature associated with a ureteral calculus distal to it. Aetiology, clinical features, diagnosis and therapy of fibroepithelial polyps are discussed in the light of the literature.
Our Experience in Eight Cases With Urinary Hydatid Disease: a Series of 372 Cases Held in Nine Different Clinics
(Wiley, 2006) Yilmaz, Y.; Kosem, M.; Ceylan, K.; Koseoglu, B.; Yalcinkaya, I.; Arslan, H.; Soylemez, O.
Objectives: Hydatid disease, a parasitic infestation caused by the larval stage of the cestode Echinococcus granulosus, is diagnosed commonly in the east and south-east regions of Turkey. The aim of this study is to emphasize the relatively frequent occurrences of echinococcosis in our region, and to discuss therapeutic options and treatment results according to current literature. Methods: A retrospective 10-year review of nine different clinics' records of the Research Hospital of the Medical School of Yuzuncu Yil University revealed 372 hydatid disease cases that were localized in various organs and treated surgically (271 cases) or drained percutaneously (99 cases). Hydatid disease was diagnosed by ultrasonography (US) and computed tomography scans (CT) and confirmed histopathologically. Results: The involved organ was lung in 203 cases (131 adults, 72 children), liver in 150, spleen in 9, brain in 2, kidneys in 7 cases and the retrovesical area in 1 case. The urogenital system is involved at a rate of 2.15%. Two hundred and seventy-one cases were treated surgically and 99 percutaneously. Two cases with renal hydatid cyst refused the surgical procedure (one had a solitary kidney with hydatid cyst). Albendazole was administered to 192 patients; 93 patients had open surgical procedure and 99 patients underwent percutaneous procedure. Cysts were excised totally in the open surgical procedure; however, involved kidneys were removed totally (four cases) except one. Cystectomy and omentoplasty was performed in one case. Complications were as follows: in six cases, cystic material was spilled into the bronchial cavity during the dissection and a renal hydatid cyst ruptured and spilled retroperitoneally. Conclusion: Hydatid disease is a serious health problem in Turkey. The mainly affected organs are liver and lung. It can be treated surgical or by percutaneous aspiration.
Primary Non-Mucinous, Non-Papillary Adenocarcinoma of the Ureter
(Akademiai Kiado Rt., 1998) Yilmaz, Y.; Dilek, H.; Odabaş, Ö.; Atilla, M.K.; Aydin, S.
We report a case of primary, non-mucinous, non-papillary ureteral poorly differentiated adenocarcinoma. The primary focus could only be detected during surgical exploration, because computed tomography (CT), ultrasonography (US), intravenous urography (IVU) and other radiologic and endoscopic procedures revealed no primary neoplastic focus, only lymph node and various bone metastases. Total nephroureterectomy with a bladder cuff was performed to decrease pain of the patient and to remove the primary tumoral focus.
Protective Effect of Curcumin on Priapism and Ischemia-Reperfusion Injury in Rats
(verduci Publisher, 2015) Yilmaz, Y.; Taken, K.; Atar, M.; Ergun, M.; Soylemez, H.
OBJECTIVE: We aimed to identify the oxidative stress effects of the ischemic priapism on cavernosal tissues and to assess the biochemical and histopathological effects of curcumin in rats. MATERIALS AND METHODS: 26 adult male Sprague Dawley rats were randomly divided into three groups. Group 1 (Control, n = 8): only penectomy was performed and 3 ml blood samples were obtained from the vena cava inferior (VCI). Group 2 (ischemia-reperfusion group; n=8): penectomy was performed after 1 hour ischemic priapism + 30 min reperfusion and 3 ml blood samples were obtained from the VCI. Group I I I (IR + CURC group, n = 10) : 200 mg/kg/day curcumin per orally before surgery for 7 days + penectomy after 1 hour ischemic priapism + 30 min reperfusion and 3 ml blood samples from the VCI. Total oxidant status (TAS), total ant ioxidant status (TAS) and paraoxonase (PON1) levels were measured. Tissue samples were investigated and scored histopathologically in terms of bleeding, edema and necrosis. RESULTS: TOS levels were higher (p = 0.002), and TAS levels were lower (p = 0.001) in the IR group compared to the control group. As a result of curcumin treatment, TAS levels were increased (p = 0.003), and TOS levels were decreased (p = 0.004) in the IR + CURC group compared to the IR group. In the treatment group (IR + CURC) TAS and TOS levels were similar to levels in the control group. PON1 levels were increased with ischemia-reperfusion (p = 0.21) and decreased with curcumin treatment (p = 0.53), however these changes were not statistically significant. There was no significant difference in the effects of curcumin on histopathological changes. CONCLUSIONS: This study showed that curcumin has preventive effects on oxidative stress parameters against ischemia-reperfusion injury.
Severe Complications of Circumcision: an Analysis of 48 Cases
(2007) Ceylan, K.; Burhan, K.; Yilmaz, Y.; Can, S.; Kuş, A.; Mustafa, G.
Objective: Circumcision is still the most commonly performed surgery in Islamic and Jewish societies. We report the findings of 48 cases referred for serious complications after circumcision that needed secondary surgical interventions. The aim of this study is to emphasize the important problem of circumcision complications. Patients and methods: The 48 cases (mean age 14 years, range 5 months-24 years) with complications of circumcision were reviewed retrospectively. Circumcisions were performed at various medical centers or during religious ceremonies in environments other than health facilities. Results: The most commonly observed complication was preputio-glandular fusion, seen in 25 cases (52%). The other complications were: meatal stenosis in 11 (23%), urethral fistula in five (10.4%), partial glandular amputation in four (8%) and opening distal urethra in three (6%). Adhesion freeing and revision were performed in all cases of preputio-glandular fusion, patients with meatal stenosis underwent meatotomy, urethral fistulae were repaired by simple closure, partial glans amputations were patched with buccal mucosa, and patients with complete open distal urethra were repaired by Mathieu (one patient) and tubularized incised plate urethroplasty techniques. Conclusion: Circumcision may be associated with many serious complications. To prevent these complications, the operation should be performed by educated and experienced personnel. © 2006 Journal of Pediatric Urology Company.
Structural and Photon/Neutron Attenuation Features of Pbni/Cnt Nanocomposites: an Experimental Approach
(Pergamon-elsevier Science Ltd, 2023) Yorgun, N. Yildiz; Kavaz, E.; Ulas, B.; Yilmaz, Y.; Kivrak, H.
In this work, PbNi/CNT nanocomposites were prepared by sodium borohydride method at varying metallic molar ratios for determination of their structural and nuclear radiation shielding properties. As-prepared PbNi/CNTs were characterized by using transmission electron microscopy (TEM), scanning electron microscopy energy-dispersive X-ray spectroscopy (SEM-EDX), elemental mapping, and X-ray diffraction (XRD). Average particle sizes of Pb40Ni60/CNT, Pb60Ni40/CNT, Pb80Ni20/CNT, and Pb20Ni80/CNT materials were obtained as 5.6, 3.8, 4.2, and 4.2 nm, respectively. Radiation attenuation properties of the produced nanocomposites were investi-gated experimentally by irradiating the samples with gamma photons in the 34-383 keV energy range. The accuracy of the experimental results was checked with outcomes calculated with EpiXS software. Mass attenu-ation coefficient (MAC) was found in the range of 22.924-0.108 cm2/g, 5.473-0.129 cm2/g, 3.767-0.109 cm2/g, and 4.626-0.128 cm2/g for Pb20Ni80/CNT, Pb80Ni20/CNT, Pb40Ni60/CNT, and Pb60Ni40/CNT samples, respec-tively. Also, other photon shielding parameters (HVL, Zeff, EABF, and EBF) were calculated to make a comprehensive evaluation. The results show that 30% by weight Pb80Ni20 doped CNT has the lowest HVL and buildup factors values and the largest MAC, Zeff values. Finally, macroscopic cross-section values (sigma R) were obtained to estimate the ability of the nanocomposite samples to reduce the energy of fast neutrons. It was revealed that the sigma R values of the samples were in the range of 0.158-0.169 cm-1 and they had higher sigma R values than conventional neutron moderators.
Testicular Needle Biopsy: Is It a Safe and Adequate Method
(1997) Odabaş, Ö.; Uǧraş, S.; Yilmaz, Y.; Aydin, S.; Atilla, M.K.
We aimed to investigate if testicular needle biopsy is adequate and safe for the examination of testis. Needle biopsies were performed on 21 testes of 5 patients with advanced prostate cancer and 11 patients with cryptorchidism before orchiectomy. Biopsies were done with the prostatic tru-cut needle. After needle biopsy, the tract and puncture sites were explored and an incisional biopsy was performed on each testis. Both needle specimens and open biopsy specimens were fixed in Bouin's solution and sent for histologic examination. There were small haematomas in two testes and moderate heamorrhage between tunica vaginalis layers in another. The tissues obtained by needle biopsy were sufficient except for two specimens and diagnostic accuracy was perfect. Nevertheless, measurement of the seminiferous tubules of the lamina propria could not be achieved in many cases.
An Unusual Foreign Body in the Bladder
(2002) Yilmaz, Y.; Bayrakli, H.; Çeçen, K.; Güneş, M.
Using of Nmp 22 Only or Together With the Cytology in the Diagnosis and Follow-Up of Bladder Tumors
(2003) Yilmaz, Y.; Aydin, S.; Bayrakli, H.; Uǧraş, S.; Özman, E.; Berktaş, M.
Introduction: Nuclear Matrix Protein is a tumor marker using for early diagnosis and follow up of bladder cancer. This study was designed to determine the effectiveness of NMP 22 and cytology for early detection and follow up of bladder cancer. Material and Methods: Sixty-eight patients who were included in this study were divided in three groups. The first group comprised 46 patients with hematuria and lower urinary tract symptoms, who had no previous history of bladder cancer. Seventeen patients were included in the second group who treated by transurethral resection of bladder tumor, partial cystectomy or intracaviter chemotherapy. The third group consisted of 5 patients with bladder tumor previously. They refused any kind of treatment. A reference value of 15 U/ml was utilized for NMP 22 in urine. A positive outcome was a tumor seen in cystoscopic examination, which was later histopathologically confirmed as malignant. A negative outcome was tumor free cystoscopy, or benign histopathology of the suspected biopsy specimens. Urine cytology results were considered "malign" (severe dysplasia, malign and transitional cell carcinoma) and "benign" (metaplasia, inflamatory cells, dysplasia ). Results: Eighteen patients of the first group had bladder cancer, whereas NMP 22 was (+) in 29 patients in this group. However, NMP was (+) in 14 of the 18 patients with bladder tumor. The sensitivity and specificity of NMP 22 in group 1 were 77.7% and 46.6%, and that of cytology were 83.3% and 89.2% respectively. When all of the patients were evaluated together, the sensitivity and specificity of NMP 22 were 80.7% and 64.2%, and that of cytology were 88.4% and 90.4% respectively. Conclusion: In conclusion, this study indicates that NMP 22 reduces the necessity of cystoscopy, and it can be used as a screening test in combination with cytology.
Virtual Computed Tomography Cystoscopy in Bladder Pathologies
(Brazilian Society of Urology, 2006) Arslan, H.; Ceylan, K.; Harman, M.; Yilmaz, Y.; Temizoz, O.; Can, S.
Objective: Assessed the usefulness of virtual cystoscopy performed with multidetector computed tomography (CT) in patients with different urinary bladder pathologies compared to the conventional cystoscopy. Materials and methods: Eighteen patients with different bladder pathologies, which consisted of 11 tumors, 3 diverticula, 2 trabecular changes and 2 stones, were assessed with conventional cystoscopy and virtual CT cystoscopy. The results of virtual CT cystoscopy were compared with the findings of conventional cystoscopy. We determined the detection rate and positive predictive value of CT imaging based virtual cystoscopy in the diagnosis of urinary bladder lesions. Results: CT scanning was well tolerated by all patients, and no complications occurred. Images in 16 (88%) of the 18 virtual cystoscopic examinations were either of excellent or good quality. All tumors except one, 2 trabecular changes and 2 stones were characterized with similar findings in the both of methods. The masses ranged from 0.4 to 7.0 cm in diameter. While conventional cystoscopy could not evaluate interior part of the diverticulum, virtual CT cystoscopy could demonstrate clearly within it. There were no false-positive findings in our series. Conclusion: Virtual CT cystoscopy is a promising technique to be used in the detection of bladder lesions. It should be considered especially at the evaluation of bladder diverticula. In the future, it may be possible or even advantageous to incorporate into the imaging algorithm for evaluation of bladder lesion.