Publications by authors named "Nihat Aksakal"

Background: Adrenal gland injury (AGI) associated with trauma is an uncommon and often overlooked condition. This study aimed to evaluate the frequency of AGI in individuals with severe trauma injuries and investigate the outcomes of patients with AGI.

Methods: All patients admitted to a tertiary trauma referral center under the trauma protocol who had a computed tomography (CT) scan between January 2012 and January 2023 were analyzed retrospectively.

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Introduction: This study aims to assess Ga-Trivehexin PET/CT for detecting hyperfunctioning parathyroid tissue in comparison to [Tc]Tc-MIBI scintigraphy-SPECT/CT (MIBI scan) in patients with primary hyperparathyroidism (PHPT).

Methods: The cohort comprised 13 patients diagnosed with PHPT based on biochemical analyses, including serum calcium, phosphorus, and parathyroid hormone (PTH) levels. Each participant underwent cervical ultrasonography, MIBI scan, and Ga-Trivehexin PET/CT imaging.

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Background: The primary surgical approach for removing adrenal masses is minimally invasive adrenalectomy. Recognition of anatomical landmarks during surgery is critical for minimizing complications. Artificial intelligence-based tools can be utilized to create real-time navigation systems during laparoscopic and robotic right adrenalectomy.

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Progress in the field of pediatric thyroid pathology has linked DICER1 mutations to benign follicular cell-derived thyroid tumors (e.g., follicular adenoma with papillary architecture, follicular nodular disease), low-risk follicular cell-derived differentiated thyroid carcinomas and PDTCs enriched in fatal or recurrent/progressive disease.

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Background: Minimally invasive adrenalectomy is the main surgical treatment option for the resection of adrenal masses. Recognition and ligation of adrenal veins are critical parts of adrenal surgery. The utilization of artificial intelligence and deep learning algorithms to identify anatomic structures during laparoscopic and robot-assisted surgery can be used to provide real-time guidance.

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In this report, we describe a very rare variant adrenal venous anatomy in a left-sided pheochromocytoma case with left adrenal vein draining into the inferior vena cava (IVC). A 66-year-old female with an incidentally discovered left adrenal mass was referred to our clinic for further diagnostic work up. She had hypertension for the past three years.

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Radiofrequency ablation is a minimally invasive modality performed as an alternative to surgery in patients with benign thyroid nodules and recurrent thyroid cancers. As far we know there is scant data regarding the safety of radiofrequency ablation for metastatic lymph nodes. In this report, our aim was to evaluate the safety and efficacy of radiofrequency ablation for metastatic lymph nodes in patients with recurrent papillary thyroid cancer metastasis.

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Background: This study was aimed to investigate the relationship of miR-17-5p, miR-30b, miR-30d, miR-216a and miR-216b associated with autophagy gene beclin 1, and beclin 1 gene with colorectal cancer (CRC).

Materials And Methods: Forty-seven patients with CRC and 50 healthy individuals with no cancer history were included in this study. In the serum, tumor and non-tumoral tissue samples of the CRC patients, and in the serum samples of the healthy subjects, expression levels of miRNAs were detected by qRT-PCR.

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Objective: The purpose of the study was to evaluate the impact of the coronavirus disease (COVID-19) pandemic on endocrine surgical volumes.

Methods: There were periodic surgical restriction sin our country in 2020 due to the pandemic. Endocrine surgery volumes at the Division of Endocrine Surgery, Istanbul Medical Faculty were compared between 2019 and 2020.

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Objective: Metastatic chest wall tumors resulting from thyroid carcinomas are not unusual; however, the late onset of metastasis of a follicular thyroid carcinoma (FTC) is extremely rare. We aim to present a report of a case with chest wall metastasis of an FTC 10 years following thyroidectomy.

Methods: Among the studies performed were chest wall tumor imaging, serum thyroid stimulating hormone determination, and histopathology of the chest wall tumor and thyroid tissue examination.

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Background: Revision of any neck surgeries is usually associated with increased rate of complications compared to the initial surgery due to adhesions. Especially, recurrent laryngeal nerve injury and hypoparathyroidism are most important postoperative complications of thyroid revision surgery. This study aimed to reveal anti-adhesive effects of cross-linked hyaluronic acid gel (NCHAG) in thyroid surgery.

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Objectives: Over the last decade, surgeons have started to think of the ways in which to further reduce the trauma of surgery and improve cosmesis. Consequently, many surgeons have yielded to single incision laparoscopic surgeries (SILS) in order to maximize operative and postoperative outcomes. This study aimed to highlight the feasibility and challenges of different procedures by presenting our data about different fields of abdominal SILS practices with long term follow-up.

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Objectives: Single-incision laparoscopic procedures have been gaining popularity in recent years due to their minimal incisional morbidity and improved cosmetic outcomes. Herein, we will compare the feasibility and outcomes of single-incision and conventional multiport laparoscopic distal pancreatectomy.

Methods: This study involves consecutive patients who underwent either single-incision or conventional multiport laparoscopic distal pancreatectomy from March 2007 to February 2014.

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Purpose: Minimal invasive procedures has become increasingly popular during the last decades. The aim of this retrospective study was to evaluate the safety and feasibility of laparoscopic splenectomy in patients with immune thrombocytopenic purpura who has very low platelet counts.

Methods: Between March 28, 2005 and June 08, 2013, a total of 132 patients with the diagnosis of immune thrombocytopenic purpura were included to study.

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Objective: Parathyroid glands and recurrent laryngeal nerves (RLNs) are at risk during thyroid surgery. However, the identification of the nerves reduced these risks. Intraoperative nerve monitoring (IONM) during thyroid surgery has gained widespread acceptance as an aid to the gold standard of visually identifying the RLN.

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Objectives: Parathyroid glands and recurrent laryngeal nerves (RLNs) are at risk during thyroid surgery. However, the identification of the nerves has reduced these risks. Intraoperative nerve monitoring (IONM) during thyroid surgery has gained widespread acceptance as an aid to the gold standard of visually identifying the RLN.

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Objectives: P-glycoprotein (P-gp) contributes to the disposition of a wide variety of drugs; therefore, single nucleotide polymorphisms (SNPs) in the P-gp coding gene might affect its activity. It is well known that personalized medicine, instead of empirical treatment, is a clinically important approach for enhancing responses among patients. Indeed, there is a need to evaluate the association between SNPs of P-gp encoded multidrug resistance genes (, ), and the dosage requirements of these drugs.

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Chronic atherosclerotic mesenteric ischemia is a debilitating disorder. It may cause postprandial abdominal pain leading to severe weight loss. Patients are usually emotionally affected with major depression.

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Pheochromocytoma is an uncommon catecholamine-secreting tumor in which resection is often associated with hemodynamic instability (HI). In this study, we aim to clarify the factors affecting surgical HI in patients who underwent surgery with the diagnosis of pheochromocytoma. All patients who underwent surgery with the diagnosis of pheochromocytoma between 2008 and 2015 were analyzed retrospectively.

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Objective: This study aimed to reveal the risk factors and outcomes of gallbladder perforation (GP) during laparoscopic cholecystectomy.

Methods: Videotapes of all patients who underwent an elective cholecystectomy at our department were retrospectively analyzed, and the patients were divided into two groups based on the presence of GP. The possible risk factors and early outcomes were analyzed.

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Retrosternal goiter prevalence is 5 to 40 per cent according to classifications in goiter series. Goiters with mediastinal extension were reported to be related with higher cancer rates. In our study, we aimed to investigate whether cancer incidence increased in retrosternal goiters compared with the cervical ones.

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Thyroid hormones play a vital role in the human body for growth and differentiation, regulation of energy metabolism, and physiological function. Hypothyroidism is a common endocrine disorder, which generally results from diminished normal circulating concentrations of serum thyroxine (fT4) and triiodothyronine (fT3). The primary choice in hypothyroidism treatment is oral administration of levothyroxine (L-T4), a synthetic T4 hormone, as approximately 100-125 μg/day.

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Objectives: Pancreatic surgery has been greatly influenced by the advent of laparoscopic surgery and increasing experience in its performance and by advances in techniques and surgical devices. This study aimed to represent two centers' initial experiences in laparoscopic distal pancreatic surgery.

Methods: This study was a bi-centric study including 30 patients undergoing distal pancreatectomy for pancreatic disorders.

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Article Synopsis
  • - The study explored how geographical differences impact the clinical presentation and surgical outcomes of patients with primary hyperparathyroidism (pHPT) across three regions: Black Sea, Mediterranean, and Anatolia.
  • - Data from 694 patients across 23 centers indicated that the median age was 54, with 25% being asymptomatic; significant variations emerged in preoperative symptoms, serum calcium levels, and adenoma sizes depending on the region.
  • - Findings suggest that environmental factors related to different habitats influence the clinicopathological characteristics of pHPT patients, with South-East Anatolia showing all symptomatic patients, while Bulgaria had the largest adenoma sizes and highest calcium levels.
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Purpose: The current study aims to analyze the risk factors for the failure of ileostomy reversal after laparoscopic low anterior resection for rectal cancer.

Methods: All patients who underwent a laparoscopic low anterior resection for rectal cancer with a diverting ileostomy between 2007 and 2014 were abstracted. The patients who underwent and did not undergo a diverting ileostomy procedure were compared regarding patient, tumor, treatment related parameters, and survival.

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