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  1. Article: YouTube as a Source of Information on Pilonidal Sinus Disease: A Reliability and Quality Analysis.

    Ozdemir, Kayhan / Muhtaroğlu, Ali

    Cureus

    2023  Volume 15, Issue 2, Page(s) e34792

    Abstract: Aim This study aimed to assess the quality and reliability of the information in YouTube videos regarding pilonidal sinus disease (PSD). Methods A total of 100 most-viewed videos on PSD were included in the analysis by two general surgeons. Video ... ...

    Abstract Aim This study aimed to assess the quality and reliability of the information in YouTube videos regarding pilonidal sinus disease (PSD). Methods A total of 100 most-viewed videos on PSD were included in the analysis by two general surgeons. Video duration and content, date of upload, qualification of the video uploaders, and number of daily and total view, like, and comment counts were analyzed. We grouped the videos as those uploaded by healthcare professionals and non-professionals. The quality of the video contents was assessed with the Global Quality Scale (GQS) and the reliability of the video content with the DISCERN scoring system. Results Eighty-five (85%) videos were uploaded by professionals and 15 (15%) videos by laypersons. The average DISCERN score of the reviewed video contents was 3.18 ± 1.23, and the average GQS score was 3.39 ± 1.24. In the overall subjective evaluation, the mean DISCERN value was found as 4.01 ± 1.24 and the mean GQS value as 4.25 ± 1.25 in the useful videos. The mean DISCERN value was found as 2.32 ± 1.22 and the mean GQS value as 2.48 ± 1.25 in the misleading videos. Conclusion Our results showed that most of the YouTube videos on PSD were loaded by healthcare professionals. However, the mean quality and reliability scores were lower in videos uploaded by laypersons. Given the prevalence of PSD, physicians should be promoted for uploading accurate and professional video contents to direct patients to the right solutions for their problems.
    Language English
    Publishing date 2023-02-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2747273-5
    ISSN 2168-8184
    ISSN 2168-8184
    DOI 10.7759/cureus.34792
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: The Underestimated Impact of Hashimoto Thyroiditis on Thyroid Papillary Carcinoma.

    Harmantepe, Ahmet Tarik / Ozdemir, Kayhan / Bayhan, Zulfu / Kocer, Belma

    Updates in surgery

    2024  

    Abstract: 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 ... ...

    Abstract 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. All 356 patients whose pathology was reported as PTC who were operated between 2015 and 2023 were included in the study. PTC patients were divided into 2 groups as those with and without HT. The effect of HT association on clinicopathological features was investigated. In 356 PTC patients, the rate of HT was 31.2%. PTC patients with HT had less multifocality (p < 0.05), more lymph node metastases (LNM) (p < 0.01) compared to PTC patients without HT. The presence of HT did not affect the bilaterality of the tumor, tumor diameter, lymphovascular invasion, or capsule invasion. While multifocality was observed less frequently in PTC patients with HT, lymph node metastasis rates were higher.
    Language English
    Publishing date 2024-04-30
    Publishing country Italy
    Document type Journal Article
    ZDB-ID 2572692-4
    ISSN 2038-3312 ; 2038-131X
    ISSN (online) 2038-3312
    ISSN 2038-131X
    DOI 10.1007/s13304-024-01854-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Reply to the editor: should multifocality be an indication for prophylactic neck dissection for papillary thyroid cancer?

    Ozdemir, Kayhan / Kocer, Belma / Bayhan, Zulfu

    Updates in surgery

    2023  Volume 75, Issue 8, Page(s) 2421

    Language English
    Publishing date 2023-09-08
    Publishing country Italy
    Document type Letter
    ZDB-ID 2572692-4
    ISSN 2038-3312 ; 2038-131X
    ISSN (online) 2038-3312
    ISSN 2038-131X
    DOI 10.1007/s13304-023-01645-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: A different way to diagnosis acute appendicitis: machine learning.

    Harmantepe, Ahmet Tarik / Dikicier, Enis / Gönüllü, Emre / Ozdemir, Kayhan / Kamburoğlu, Muhammet Burak / Yigit, Merve

    Polski przeglad chirurgiczny

    2024  Volume 96, Issue 2, Page(s) 38–43

    Abstract: ... Indroduction: ... Machine learning is a branch of artificial intelligence based on the idea that systems can learn from data, identify patterns, and make decisions with minimal human intervention ... ... Aim: ... Our aim is to predict acute ... ...

    Abstract
    Indroduction:
    Machine learning is a branch of artificial intelligence based on the idea that systems can learn from data, identify patterns, and make decisions with minimal human intervention.

    Aim:
    Our aim is to predict acute appendicitis, which is the most common indication for emergency surgery, using machine learning algorithms with an easy and inexpensive method.

    Materials and methods:
    Patients who were treated surgically with a prediagnosis of acute appendicitis in a single center between 2011 and 2021 were analyzed. Patients with right lower quadrant pain were selected. A total of 189 positive and 156 negative appendectomies were found. Gender and hemogram were used as features. Machine learning algorithms and data analysis were made in Python (3.7) programming language.

    Results:
    Negative appendectomies were found in 62% (n = 97) of the women and in 38% (n = 59) of the men. Positive appendectomies were present in 38% (n = 72) of the women and 62% (n = 117) of the men. The accuracy in the test data was 82.7% in logistic regression, 68.9% in support vector machines, 78.1% in k-nearest neighbors, and 83.9% in neural networks. The accuracy in the voting classifier created with logistic regression, k-nearest neighbor, support vector machines, and artificial neural networks was 86.2%. In the voting classifier, the sensitivity was 83.7% and the specificity was 88.6%.

    Conclusions:
    The results of our study show that machine learning is an effective method for diagnosing acute appendicitis. This study presents a practical, easy, fast, and inexpensive method to predict the diagnosis of acute appendicitis.
    .
    MeSH term(s) Male ; Humans ; Female ; Appendicitis/diagnosis ; Appendicitis/surgery ; Artificial Intelligence ; Machine Learning ; Abdominal Pain ; Acute Disease
    Language English
    Publishing date 2024-04-17
    Publishing country Poland
    Document type Journal Article
    ZDB-ID 128732-1
    ISSN 2299-2847 ; 0032-373X
    ISSN (online) 2299-2847
    ISSN 0032-373X
    DOI 10.5604/01.3001.0053.5994
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Robotic Surgery for the Treatment of Achalasia Cardia: Surgical Technique, Initial Experiences and Literature Review.

    Uzunoglu, Mustafa / Altintoprak, Fatih / Yalkin, Omer / Özdemir, Kayhan

    Cureus

    2022  Volume 14, Issue 1, Page(s) e21510

    Abstract: Background The outcomes of surgical interventions for achalasia treatment improved with the advent of minimally invasive surgery and the introduction of robotic surgery. This article describes the technical details of robotic achalasia surgery, shares ... ...

    Abstract Background The outcomes of surgical interventions for achalasia treatment improved with the advent of minimally invasive surgery and the introduction of robotic surgery. This article describes the technical details of robotic achalasia surgery, shares our initial experiences, and discusses why robotic surgery will become the first choice for the surgical treatment of achalasia. Methods The records of patients with a diagnosis of achalasia who underwent robotic surgery were evaluated retrospectively. The patients' data were examined in terms of demographic parameters, duration of complaints, treatment options applied previously, robotic surgery technique, and postoperative outcomes. Results Of the six patients evaluated, four (66.7%) were males and two (33.3%) were females. Their mean age was 32 years (20-51 years), and the mean symptom duration was 4.6 years (2-9 years). All of the patients underwent robotic Heller cardiomyotomy surgery. After the myotomy procedure, five of the six patients (83.3%) underwent partial anterior fundoplication (Dor) as an antireflux procedure. The cruroraphy procedure was performed in one patient (16.7%) due to accompanying hiatal hernia, whereas the procedures were completed in five patients (83.3%) without performing posterior dissection of the oesophagus. In the postoperative follow-up period, no surgical problem was encountered, while reflux symptoms developed in one patient (16.7%) and were controlled by medical therapy. Conclusions The success of surgical treatment of achalasia is incontrovertible. Due to the various advantages of robotic surgery, it is now frequently used in narrow-area surgeries, such as achalasia surgery.
    Language English
    Publishing date 2022-01-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2747273-5
    ISSN 2168-8184
    ISSN 2168-8184
    DOI 10.7759/cureus.21510
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: ANALYSIS OF DIAGNOSTIC EXCISIONAL LYMPH NODE BIOPSY RESULTS: 12-YEAR EXPERIENCE OF A SINGLE CENTER.

    Bayhan, Zulfu / Ozdemir, Kayhan / Gonullu, Emre / Harmantepe, Ahmet Tarik / Capoglu, Recayi / Akin, Emrah / Aziret, Mehmet / Altintoprak, Fatih

    Acta clinica Croatica

    2024  Volume 62, Issue 1, Page(s) 58–64

    Abstract: Lymph node biopsy is indicated in patients with suspected malignancy or lymphadenopathy due to unclarified reasons. Lymph node biopsy can be performed as fine needle aspiration biopsy, core biopsy, or excisional lymph node biopsy. In particular, the ... ...

    Abstract Lymph node biopsy is indicated in patients with suspected malignancy or lymphadenopathy due to unclarified reasons. Lymph node biopsy can be performed as fine needle aspiration biopsy, core biopsy, or excisional lymph node biopsy. In particular, the diagnosis of malignant lymphoma is considered insufficient for oncological treatment unless classified into subgroups. Core biopsy and excisional biopsy can be performed to diagnose lymphoma and classify it into subgroups. Core biopsy may also be limited in some cases for the diagnosis of lymphoma. Therefore, patients are referred to surgical departments for excisional lymph node biopsy. It was aimed herein to analyze the results of excisional lymph node biopsies performed for diagnostic purposes in our department. Data on 73 patients having undergone diagnostic excisional lymph node biopsy at Sakarya University Medical Faculty Training and Research Hospital between January 2008 and January 2020 were retrospectively analyzed. Patients were evaluated in terms of age, gender, biopsy site, pathological diagnosis, number and diameter of lymph nodes excised. Patients younger than 18 years of age, those with sentinel lymph node biopsies, and lymph node dissections performed for any known malignancy were excluded from the study. Statistical data analysis was done using SPSS statistical software. There were 37 (50.7%) female and 36 (49.3%) male patients, mean age 52.07 (18-90) years. Axillary lymph node biopsy was performed in 32 patients, inguinal lymph node biopsy in 29 patients, cervical lymph node biopsy in 3 patients, intra-abdominal lymph node biopsy in 6 patients, mediastinal lymph node biopsy in 1 patient, and supraclavicular lymph node biopsy in 2 patients. All of the lymph node biopsies were performed as excisional biopsy. Malignancy was detected in 36 (49.3%) patients. In 37 (50.3%) patients, the causes of lymphadenopathy were found to be benign pathologies. When the causes of malignant disease were examined, it was observed that 23 (31.5%) patients were diagnosed with lymphoma. Hodgkin lymphoma was detected in 5 patients diagnosed with lymphoma, and non-Hodgkin lymphoma was found in 18 patients. Metastatic lymphadenopathy was observed in 13 (17.8%) patients. Reactive lymphoid hyperplasia (26%) and lymphadenitis (20.5%) were found among the causes of benign lymphadenopathy. The number of excised lymph nodes was between 1 and 4, and their diameter was between 9 and 75 mm (mean: 29.53±15.56 mm). There was no statistically significant difference between benign and malignant patients according to gender, age, lymph node diameter, number of lymph nodes excised, and excisional lymph node biopsy site. For diagnostic lymph node biopsy, fine-needle aspiration biopsy and core biopsy should be performed primarily. If lymphoma is suspected in the diagnosis, fine-needle aspiration biopsy is not necessary. In this case, it is believed that it is more appropriate to perform core biopsy first. If the core biopsy is insufficient for diagnosis, it is more appropriate to perform surgical biopsy in order to cause no delay in diagnosis and treatment. Excisional biopsy is a method that can be safely performed and does not cause severe morbidity in palpable peripheral lymphadenopathies. Although it does not cause severe morbidity because it is an invasive procedure, excisional biopsy should be performed in a selected patient group.
    MeSH term(s) Humans ; Male ; Female ; Middle Aged ; Retrospective Studies ; Lymph Nodes/pathology ; Biopsy ; Lymphadenopathy/pathology ; Lymphoma/diagnosis ; Lymphoma/surgery ; Lymphoma/pathology ; Hodgkin Disease/pathology ; Biopsy, Fine-Needle
    Language English
    Publishing date 2024-01-18
    Publishing country Croatia
    Document type Journal Article
    ZDB-ID 1478635-7
    ISSN 1333-9451 ; 0353-9466
    ISSN (online) 1333-9451
    ISSN 0353-9466
    DOI 10.20471/acc.2023.62.01.07
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Comparison of treatment methods in plastron appendicitis: a tertiary center experience.

    Ozdemir, Kayhan / Harmantepe, Ahmet Tarik / Dulger, Ugur Can / Gonullu, Emre / Dikicier, Enis / Bayhan, Zulfu / Altintoprak, Fatih

    Malawi medical journal : the journal of Medical Association of Malawi

    2024  Volume 35, Issue 4, Page(s) 224–227

    Abstract: 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.!# ...

    Abstract 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. Data were taken from the hospital database. The patients were divided into three groups: those treated with primary surgery, with interval appendectomy and only with conservative method.
    Results: Interval appendectomy resulted in a lower rate of conversion to open surgery compared to primary surgery, shorter operative time, and lower complication rates. Surgical procedures were found to be superior in detecting neoplasms compared to conservative treatment. After conservative treatment, one of three patients was retreated with the diagnosis of acute appendicitis.
    Conclusion: In plastron appendicitis, routine interval appendectomy can be performed due to its advantages over other treatments such as the frequency of attacks after conservative treatment, the risk of the tumor being overlooked in conservative treatment, and the high rate of complications and conversion to open surgery in the primary surgery group.
    MeSH term(s) Adult ; Humans ; Retrospective Studies ; Appendicitis/surgery ; Appendicitis/complications ; Appendicitis/diagnosis ; Length of Stay ; Appendectomy/adverse effects ; Appendectomy/methods ; Acute Disease ; Treatment Outcome
    Language English
    Publishing date 2024-02-01
    Publishing country Malawi
    Document type Journal Article
    ISSN 1995-7270 ; 1995-7262
    ISSN (online) 1995-7270
    ISSN 1995-7262
    DOI 10.4314/mmj.v35i4.5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Double peptic ulcer perforation in a Covid-19 patient, extremely rare entity.

    Ozdemir, Kayhan / Mantoglu, Baris / Cakmak, Guner / Dulger, Ugurcan / Bayhan, Zulfu / Eroz, Erhan

    Ulusal travma ve acil cerrahi dergisi = Turkish journal of trauma & emergency surgery : TJTES

    2023  Volume 29, Issue 2, Page(s) 252–254

    Abstract: Peptic ulcer perforation is one of the leading causes of acute abdomen, presenting with acute abdominal pain and severe distress for the patient. In one-third of patients, the presentation is less dramatic, resulting in significant delays in diagnosis. ... ...

    Title translation Bir Covid-19 hastasında çift peptik ülser perforasyonu, son derece nadir bir durum.
    Abstract Peptic ulcer perforation is one of the leading causes of acute abdomen, presenting with acute abdominal pain and severe distress for the patient. In one-third of patients, the presentation is less dramatic, resulting in significant delays in diagnosis. Herein, we present a very rarest case operated on for diffuse purulent peritonitis with double perforation of the stomach in a COVID-19-positive patient, which had a depressing outcome.
    MeSH term(s) Humans ; Peptic Ulcer Perforation/complications ; Peptic Ulcer Perforation/diagnosis ; Peptic Ulcer Perforation/surgery ; COVID-19/complications ; Abdomen ; Abdomen, Acute ; Abdominal Pain/etiology ; Duodenal Ulcer
    Language English
    Publishing date 2023-02-03
    Publishing country Turkey
    Document type Case Reports
    ZDB-ID 2253739-9
    ISSN 1307-7945 ; 1306-696X
    ISSN (online) 1307-7945
    ISSN 1306-696X
    DOI 10.14744/tjtes.2021.56346
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Should multifocality be an indication for prophylactic central neck dissection in papillary thyroid cancer?

    Ozdemir, Kayhan / Harmantepe, Ahmet Tarik / Gonullu, Emre / Kocer, Belma / Bayhan, Zulfu

    Updates in surgery

    2023  Volume 75, Issue 3, Page(s) 701–706

    Abstract: Although multifocality is common in patients with papillary thyroid cancer, its effects on lymphatic metastasis and the necessity of central dissection in the presence of multifocality are still controversial. In our clinic, 258 patients who underwent ... ...

    Abstract Although multifocality is common in patients with papillary thyroid cancer, its effects on lymphatic metastasis and the necessity of central dissection in the presence of multifocality are still controversial. In our clinic, 258 patients who underwent thyroidectomy between 2015 and 2020 and were found to have papillary thyroid cancer in postoperative pathology reports were analyzed. The tumor characteristics contributing to central lymph node metastasis positivity were evaluated. Lymph node metastases were not significantly increased in the presence of multifocality. In cases with bilateral multifocal tumors, compared to cases with unilateral multifocal tumors, capsular invasion (p = 0.02), vascular invasion (p = 0.01) and cervical lymphatic metastasis (p = 0.004) were observed to increase. Bilateral multifocal tumors have more aggressive clinicopathological features than unilateral tumors. We found that the risk of central lymph node metastasis increased significantly in bilateral multifocal tumors in our study. Prophylactic central lymph node dissection may be considered in patients with no preoperative or intraoperative lymph node metastasis but thought to have a multifocal tumor.
    MeSH term(s) Humans ; Thyroid Cancer, Papillary/surgery ; Thyroid Cancer, Papillary/pathology ; Neck Dissection ; Lymphatic Metastasis/pathology ; Thyroid Neoplasms/surgery ; Thyroid Neoplasms/pathology ; Carcinoma, Papillary/surgery ; Carcinoma, Papillary/pathology ; Retrospective Studies ; Carcinoma/surgery ; Thyroidectomy ; Lymph Nodes/pathology ; Risk Factors
    Language English
    Publishing date 2023-03-05
    Publishing country Italy
    Document type Journal Article
    ZDB-ID 2572692-4
    ISSN 2038-3312 ; 2038-131X
    ISSN (online) 2038-3312
    ISSN 2038-131X
    DOI 10.1007/s13304-023-01479-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Open versus laparoscopic technique in peptic ulcus perforation, how effective are score systems?Single-center experience and literature review.

    Akin, Emrah / Altintoprak, Fatih / Akdeniz, Yesim / Mantoglu, Baris / Ozdemir, Kayhan / Firat, Necattin / Çapoğlu, Recayi

    Ulusal travma ve acil cerrahi dergisi = Turkish journal of trauma & emergency surgery : TJTES

    2022  Volume 28, Issue 10, Page(s) 1437–1441

    Abstract: Background: One of the most common peptic ulcer complications is perforation (PUP) which also remains an important cause of morbidity and mortality. In this study, it was aimed to compare the results of patients who had similar pre-operative scoring ... ...

    Title translation Peptik ulkus perforasyonunda laparoskopik ve açık tekniğin karşılaştırılması, skor sistemleri ne kadar etkin? Tek merkez deneyimi ve literatür derlemesi.
    Abstract Background: One of the most common peptic ulcer complications is perforation (PUP) which also remains an important cause of morbidity and mortality. In this study, it was aimed to compare the results of patients who had similar pre-operative scoring index results (Boey, Charlson Comorbidity Index (CCI) and Mannheim Peritonitis Index (MPI), and type of surgery.
    Methods: Pre-operative Boey, CCI, and MPI scores were calculated by retrospectively examining the files of patients who were operated under emergency conditions with the diagnosis of PUP. The patients divided into two groups those who underwent laparoscopic surgery/Group-1 and open surgery/Group-2.
    Results: There was no statistical difference between the groups in terms of demographic data, hospital admission time, and length of hospital stay. The operation time was found to be longer in the laparoscopic group (110,2 SD20,6/75-150 min) than open group (54,2 SD15,7/30-120 min) (p<0.001). Morbidity was less in laparoscopic group (4% versus 14.6%) (p<0.001).
    Conclusion: The laparoscopic method may be used safely in PUP due to the lower post-operative complication rates and known advantages of minimally invasive surgery.
    MeSH term(s) Humans ; Laparoscopy/adverse effects ; Length of Stay ; Operative Time ; Peptic Ulcer Perforation/diagnosis ; Peptic Ulcer Perforation/surgery ; Peritonitis/surgery ; Postoperative Complications/epidemiology ; Postoperative Complications/surgery ; Retrospective Studies ; Treatment Outcome
    Language English
    Publishing date 2022-09-26
    Publishing country Turkey
    Document type Journal Article ; Review
    ZDB-ID 2253739-9
    ISSN 1307-7945 ; 1306-696X
    ISSN (online) 1307-7945
    ISSN 1306-696X
    DOI 10.14744/tjtes.2022.78938
    Database MEDical Literature Analysis and Retrieval System OnLINE

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