Publications by authors named "Bahadir Oz"

Purpose: The aim of this study is to investigate the effect of obesity on the results of laparoscopic adrenal surgery in patients with Cushing syndrome.

Methods: This retrospective study was performed in Department of General Surgery at Erciyes University School of Medicine between January 2010 and January 2023. Our analysis included Cushing syndrome patients who underwent unilateral laparoscopic adrenalectomy (LA) with the transabdominal lateral approach.

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Background: The present study aimed to evaluate the safety and efficacy of transperitoneal laparoscopic adrenalectomy (LA) for large adrenal tumours by comparing the outcomes of tumours larger than 6 cm with those smaller than 6 cm and also to identify the risk factors associated with prolonged operative time in transperitoneal LA.

Patients And Methods: One hundred and sixty-three patients underwent LA at our clinic from January 2014 to December 2020. Bilateral LA was performed in 20 of these 163 patients.

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Aim: We aimed to evaluate (immunohistochemically) the YAP expression in breast cancer patients undergoing neoadjuvant chemotherapy and to clarify the relationship between the molecular characteristics, treatment response and survival data and the YAP expression, and hence, to clarify the prognostic significance.

Material And Methods: One hundred and four patients who were diagnosed with Breast Cancer between 2015-2020 and underwent Neo Adjuvant Chemotherapy were included in the study. Estrogen Receptor(ER), Progesterone Receptor(PR), Human Epidermal Growth Receptor-2(HER2) and Ki-67.

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Article Synopsis
  • The study investigated the effects of erythropoietin (EPO) on bacterial translocation in rats with induced colitis.
  • Rats were divided into three groups: a control group, a colitis group (which received no treatment), and an EPO-treated group that received EPO injections after colitis induction.
  • EPO treatment resulted in significantly reduced inflammation and lower levels of bacterial translocation in various organs compared to the colitis group, indicating EPO's potential protective effects against colitis.
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The adrenal gland is a common site for metastatic disease. However, isolated adrenal metastases (AM) are rare. We present a case of a rapidly enlarging adrenal mass with solitary distant metastasis from primary malignant melanoma.

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Objective: There are multiple subtypes of breast cancer with different biological and pathological features and accordingly exhibit different clinical behaviors. The aim of this study was to compare the treatment modalities, clinical features and prognostic characteristics of Mix Mucinous Carcinomas (MMBC) and other rare tumors of the breast.

Materials And Method: A total of 2152 patients who were operated on for breast cancer in our clinic between 2010-2019, with pathological diagnoses of tubular, pure mucinous, mix mucinous or papillary carcinoma were enrolled in the study.

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Objective: The purpose of this study was to determine the risk factors that caused non-sentinel lymph nodes (nonSLNs) metastasis by considering the clinicopathological characteristics of patients who have 1-2 sentinel lymph node (SLN) metastasis in the clinical early stage (T1-2, N0) breast cancer.

Methods: The demographic and clinicopathological characteristics of the patients were recorded retrospectively. Among these, age, size of the primary breast tumor, tumor localization and multifocality/multicentricity status, preoperative serum Neutrophil/Lymphocyte rate (NLR), c-erbB2/HER2-neu status, Estrogen Receptor (ER) and Progesterone Receptor (PR) status, primary tumor proliferation index (Ki-67), histopathological grade, molecular subtypes, histopathological subtypes, nipple/areola infiltration, Lymphatic Invasion (LI), Vascular Invasion (VI), Perineural Invasion (PNI), number of metastatic SLN m(SLN), mSLN diameter, SLN Extranodal Extension (ENE) status, and number of metastatic nonSLNs were recorded.

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Objective: The most common complication after thyroid surgery is hypocalcaemia and it sometimes leads to problems that are difficult to correct in patients. The present study was aimed to determine the risk factors causing the development of hypocalcaemia after thyroid surgery.

Methods: 818 adult patients were included in the study.

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Background: This study aimed to analyze the effects of quercitrin, which has anti-inflammatory properties, on bacterial translocation in inflammatory bowel diseases by using an experimental colitis model.

Methods: Forty male Wistar-Albino rats were used in the study. Rats were divided into 4 groups (control, colitis, treatment 1 and 2 groups).

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Unlabelled: Among various substances produced by C-cells, the most important one is calcitonin (CT) that is used for detection, post-operative follow-up and evaluation of individuals at risk of developing medullary thyroid carcinoma (MTC). However, the role of serum CT measurement in the evaluation of thyroid nodules has been widely discussed, and there is still no consensus about the role of CT in the initial evaluation of all thyroid nodules. Two patients with thyroid nodules whose fine-needle aspiration results were compatible with benign cytology besides having mildly elevated basal serum calcitonin levels were reported.

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Objective: To evaluate whether E2F transcription factor 1 is a potential prognostic marker in patients with rectal cancer.

Material And Methods: Eighty-two patients who were treated with curative resection because of rectal cancer in the Erciyes University School of Medicine, Department of General Surgery were included in the study and analyzed retrospectively. Data were obtained from patient files, pathology reports, and hospital information system.

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Objective: The aim of the present study was to investigate the association between non sentinel lymph node metastasis (NSLNM) and clinicopathological factors, particularly in the case of sentinel lymph node (SLN) metastasis in one or two, in clinically node negative patients with breast cancer.

Methods: Between 10/2010 and 10/2014, 350 sentinel lymph node biopsy (SLNB) were performed in patients with histologically proven primary breast cancer in our clinic. The data collection includes the following characteristics: age, pathological tumor size, histological type, histological grade, lymphovascular invasion (LVI), number of positive SLN, size of the SLN metastasis (macrometastasis, micrometastasis, isolated tumor cells), multifocality (MF), extracapsuler invasion (ECI) of the SLN, the estrogen receptor (ER) status, the progesterone receptor (PR) status and the Her 2 receptor status, Ki 67 reseptor status.

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Objective: The aim of this study was to compare the surgical outcome of fasciocutaneous V-Y advancement flap and limberg transposition flap used to treat recurrent sacrococcygeal PSD.

Methods: A total of 58 patients with recurrent pilonidal sinus who underwent surgery were evaluated retrospectively between January 2008 to December 2013. Fasciocutaneous V-Y advancement flap was performed in 25 patients (Group VYF), and limberg transposition flap repair was performed in 33 patients (Group LTF).

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Background: Laparoscopic adrenalectomy (LA) is a safe and minimally invasive operation for benign adrenal tumours. The purpose of this study was a retrospective analysis of outcomes following laparoscopic lateral transabdominal adrenalectomy performed for benign adrenal tumours responsible for various endocrinological disorders and non-functioning tumours.

Methods: A total of 100 laparoscopic adrenalectomy were carried out between January 2007 and March 2013 via the lateral transabdominal approach.

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Objective: The aim of the study was to evaluate the effectiveness of gastric tonometry in the diagnosis of acute mesenteric ischemia in cases where a contrast-enhanced computed tomography cannot be obtained.

Material And Methods: The gastric pH (pHi) and gastric CO2 (gpCO2) were measured with gastric tonometry catheter, preoperatively and postoperatively at 24 hours, in patients with suspicion of acute mesenteric ischemia. Simultaneous evaluation of blood gases and blood lactate levels were performed.

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Background: Acute mesenteric ischemia (AMI) is a potentially life-threatening condition because of its diagnostic difficulty, operative challenges, and comorbidities a patient may have. The aim of this study was to identify factors associated with adverse outcomes in patients with AMI.

Methods: The hospital records and clinical data of all patients with AMI were reviewed for a recent 4-year period.

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Background: Idiopathic granulomatous mastitis (IGM) is an uncommon chronic inflammatory disease of the breast with uncertain optimal treatment regimen. In this study, our purpose was to report our clinical experience with 74 IGM patients who were treated wide local excision with or without steroid therapy.

Patients And Method: 74 cases diagnosed histologically as IGM were identified from surgical and pathological records between January 1995 and January 2012.

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Objectives: The aim of this experimental study was to compare the effectiveness and reliability of lovastatin and hyaluronic acid + carboxymethyl cellulose (Seprafilm).

Materials And Methods: Thirty two female Wistar-Albino rats weighing between 250 and 300 g were used in the study. The rats were divided into four groups as sham, control, lovastatin and Seprafilm each of which contained 8 rats.

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Background/aims: The aim of this trial was to study the role of glucagon-like peptide-2 in reducing bacterial translocation by virtue of its anti-inflammatory effects and ability to decrease intestinal permeability in rat models of inflammatory bowel diseases. On the basis of our results and those of other recent studies, we suggest a new treatment modality for colitis. To our knowledge, this is the first study of the effectiveness of glucagon-like peptide-2 on bacterial translocation, in treating an experimental colitis model.

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