Publications by authors named "Cihanguel Bayhan"

We aimed to compare FOLFIRI and bevacizumab with FOLFIRI and aflibercept in terms of overall survival (OS), progression-free survival (PFS) and safety in patients with RAS-mutant metastatic colon cancer who progressed after first-line FOLFOX or XELOX and bevacizumab treatment. This retrospective study included 243 patients from 15 different centres in Turkey. The endpoints of the study were OS, PFS and safety and side effect outcomes.

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Multisystem inflammatory syndrome in children (MIS-C) is a rare condition following SARS-CoV-2 infection associated with intestinal manifestations. Genetic predisposition, including inborn errors of the OAS-RNAseL pathway, has been reported. We sequenced 154 MIS-C patients and utilized a novel statistical framework of gene burden analysis, "burdenMC," which identified an enrichment for rare predicted-deleterious variants in BTNL8 (OR = 4.

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Background/aim: The transfusion of blood products is a life-saving clinical practice in patients with bleeding, hemoglobinopathy, and cancer. It was aimed herein to analyze the frequency and types of blood component-related acute transfusion reactions (ATRs) in pediatric patients.

Materials And Methods: This retrospective study was conducted at a tertiary care academic pediatric hospital.

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Article Synopsis
  • Thyroid nodules are common health concerns, with various methods available for diagnosis and treatment.
  • Interventional radiology techniques, such as fine-needle aspiration, core needle biopsy, and imaging-guided treatments, are effective in determining if nodules are benign or malignant.
  • The study focuses on the evolving role of interventional radiology in managing thyroid nodules, highlighting techniques like aspiration, ablation, and embolization.
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Introduction: Port catheters facilitate the administration of chemotherapy, antibiotics, blood products, fluid, and parenteral nutrition to pediatric patients with hematological malignancies. However, as its use has become widespread, local and systemic, catheter-related infections have emerged as important causes of morbidity and mortality. In our study, we aimed to evaluate the success of antibiotic lock therapy in port catheter-related infections of pediatric patients followed up with acute leukemia.

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Article Synopsis
  • Breast cancer is prevalent among women, with 20-30% of patients developing metastases, primarily affecting the liver. Patients with liver metastases have a wide range of survival rates, influenced by various factors.
  • This study aimed to assess the long-term survival and disease-free outcomes for patients who had surgery for liver metastases stemming from breast cancer.
  • Results indicated that surgery can enhance long-term survival, with specific patient characteristics (like health status, hormone receptor positivity, and prior treatments) linked to improved outcomes.
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The relationship between preoperative miR-146b and miR-155 expression levels and postoperative pathology results in patients operated on for nodular thyroid disease and thyroid malignancy was investigated. Sixty three patients who were operated on for thyroid nodules diagnosed as benign, malignant and atypia of undetermined significance (AUS) were included in the study. Preoperative miR-146b and miR-155 expression levels of these patients were compared according to postoperative pathology results.

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Current data on fosfomycin usage in children are limited. We present data on the clinical use of intravenous (IV) fosfomycin in children. Hospitalized patients who received ≥3 days of IV fosfomycin between April 2021 and March 2023 were analyzed retrospectively.

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Cyto/genotoxicity have been widespread utilized for the safety risk assessment of synthetic/natural chemicals. Plants can protect organisms from harmful effects of xenobiotics. On the other hand, plants can extract toxic molecules from the environment which may disrupt mitosis and cytokinesis.

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Objectives: It was aimed to compare the clinical results of the mini-monovision technique (MMV) with enhanced monofocal intraocular lens (IOL) and trifocal IOL applications and to evaluate the intereye differences in the MMV group.

Materials And Methods: This retrospective observational study evaluated the results of cataract surgeries performed on 48 eyes of 24 patients. Surgeries in Group I were performed for MMV using the RayOne EMV IOL targeting emmetropia in dominant eyes (Group IA) and -0.

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Purpose: This study aimed to give a full spectrum of orthopedic injuries associated with electric scooter (e-scooter) use and analyze related factors, report on follow-up data from the patient's perspective and make a comparative etiological analysis of young adult hip fractures.

Methods: A total of 851 consecutive patients were admitted to the Emergency Department following e‑scooter injuries between January 2021 and July 2022, of whom 188 had 214 orthopedic injuries. The demographics, injury, and incident characteristics of these patients were collected.

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Background/aim: The clinical presentation of pediatric coronavirus disease 2019 (COVID-19) is associated with a milder disease course than the adult COVID-19 syndrome. The disease course of COVID-19 has three clinicobiological phases: initiation, propagation, and complication. This study aimed to assess the pathobiological alterations affecting the distinct clinical courses of COVID-19 in pediatric age groups versus the adult population.

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It is stated that Hashimoto's Thyroiditis (HT) is a risk factor for the development of Papillary Thyroid Cancer (PTC). However, the effect of HT on the coexistence of HT and PTC is still controversial. In this study, our aim is to investigate the effect of the presence of HT on clinicopathological data in patients with PTC.

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Objectives: To evaluate the clinical results of a new trifocal intraocular lens (IOL) with sinusoidal design by comparing with a traditional trifocal IOL.

Materials And Methods: A total of 79 patients undergoing uneventful microincisional cataract surgery with bilateral implantation of one of two types of trifocal IOLs, the Acriva Trinova IOL (VSY) or Acrysof IQ PanOptix IOL (Alcon), were enrolled in this prospective study. Visual and refractive outcomes, contrast sensitivity (CS), and defocus curve were assessed at 3 months after surgery.

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Article Synopsis
  • This study compares two surgical methods, Hartmann's procedure (HP) and resection with primary anastomosis (RPA), for treating acute left-sided colonic emergencies among 1215 patients from 204 centers globally.
  • Results showed that while HP was the more common treatment (57.3%), RPA was favored for younger patients with fewer health issues and those needing surgery sooner.
  • The study concluded that although HP is still widely used, RPA might be the better option, emphasizing the importance of patient characteristics and surgeon experience in determining treatment choice.
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Background: Herbaspirillum species are nonfermenting, aerobic, helical or curved, Gram-negative bacteria belonging to the class Betaproteobacteria, order Burkholderiales. To date, only a few studies have reported on the epidemiology, clinical symptoms, antibiotic susceptibility profiles, treatment and outcomes of Herbaspirillum huttiense -related infections in pediatric patients.

Methods: The aim of this study was to present 3 years of H.

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  • SARS-CoV-2 has evolved throughout the COVID-19 pandemic, leading to lower mortality rates due to increased immunity and potentially less severe variants, with its current status as an endemic virus.
  • This study focused on symptomatic pediatric patients under 18 with confirmed COVID-19 and seasonal coronavirus (sCoV) infections, comparing their clinical and laboratory characteristics.
  • Results showed that while COVID-19 had milder symptoms, it was associated with more fever; sCoV infections led to higher instances of lower respiratory issues, and hospitalization risk varied with age and comorbid conditions, but not virus type.
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Objective: The aim of this study was to evaluate the effects of permanent placental injury due to a severe acute respiratory syndrome coronavirus 2 infection during pregnancy on feto-placental circulation.

Methods: In this cross-sectional study, 83 pregnant women with planned deliveries were divided into two groups according to their severe acute respiratory syndrome coronavirus 2 infection statuses during pregnancy. Their demographic parameters, obstetric histories, and prenatal risks were evaluated.

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During the COVID-19 pandemic, dental face shields were recommended to protect the eyes. This study aimed to examine to what extent face shield and mask contamination differ when a pre-procedural mouth rinsing with Chlorhexidine (CHX) is conducted before treatment. In this prospective, randomized study, three groups of subjects were formed (rinsing with 0.

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Objective: Adenovirus pneumonia is a common cause of community-acquired pneumonia in children and can mimic bacterial pneumonia, but there are few publications on its radiographic features. This study has evaluated the chest radiography findings of community-acquired adenovirus pneumonia in children. The frequency of radiological findings mimicking bacterial pneumonia was investigated.

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Background: It is controversial which treatment method is superior in plastron appendicitis and the research is still going on. The aim of this study is to compare treatment methods for plastron appendicitis in the adult population with our experience.

Materials And Methods: The data of 92 patients who were diagnosed with plastron appendicitis in university hospital between 2015 and 2021 were analyzed retrospectively.

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Introduction: The incidence of invasive meningococcal disease is highest in infants and young children.

Case Report: Twin infants diagnosed two days apart with meningitis due to serogroup B are presented.

Conclusions: There has never been a report of concurrent meningococcal meningitis in twin brothers.

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Background: Pavlik harness is the most widely used orthosis in the treatment of developmental dysplasia of the hip. The aim of this study was to evaluate the effect of the Pavlik harness on the development of "unaided sitting" and "independent walking" in infants with developmental dysplasia of the hip.

Methods: This prospective study, conducted from 2017 to 2020, included infants undergoing Pavlik harness therapy.

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Purpose: To evaluate the correlation between clinical tests, patient symptoms, and conjunctivochalasis in contact lens wearers and non-wearers.

Methods: This study comprised 40 eyes of 40 current soft contact lens users and 40 eyes of 40 control subjects. Cross-sectional areas of conjunctivochalasis at three locations (nasal, central, temporal) during straight and downward gazes were determined using anterior segment optical coherence tomography in all participants.

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