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Dive into the research topics where Hasan Kayahan is active.

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Featured researches published by Hasan Kayahan.


Tumori | 2004

The development of pulmonary adenocarcinoma in a patient with Job's syndrome, a rare immunodeficiency condition.

Ilhan Oztop; Binnaz Demirkan; Oktay Tarhan; Hasan Kayahan; Ugur Yilmaz; Aydanur Kargi; Mehmet Alakavuklar

The hyperimmunoglobulin E (HIE) (Jobs) syndrome often has it onset in childhood and is characterized by markedly elevated serum IgE levels, chronic dermatitis and recurrent pyogenic infections. Lymphoid malignancies have most commonly been associated with this syndrome while the first case in the literature of carcinoma associated with HIE syndrome was a squamous cell carcinoma of the vulva, described by Clark et al. in 1998. We observed a male patient with Jobs syndrome diagnosed at age three who presented with bone pain and a metastatic epithelial tumor of the bone revealed by biopsy. Diagnostic procedures aimed at detecting the primary site showed multiple mediastinal lymph nodes with lung and liver metastases on computed tomography scans and an extradural spinal metastasis at the upper thoracic level on magnetic resonance imaging. Although the patient refused a bronchoscopic procedure, a diagnosis of pulmonary adenocarcinoma was established on the basis of sputum cytology and the clinical aspects of tumor extent. Intravenous corticosteroids and palliative radiotherapy were given for the spinal metastasis. Palliative chemotherapy could not be started because of the patients poor performance status as well as nosocomial fungal pneumonia and pseudomonal urogenital infection with bacteremia. Despite the antifungal and broad-spectrum antimicrobial treatments, the patient died of pseudomonal sepsis.


International Journal of Colorectal Disease | 2007

Reticulated platelet levels in patients with ulcerative colitis

Hasan Kayahan; Mesut Akarsu; Mehmet Ali Özcan; Serdal Demir; Halil Ates; Belkis Unsal; Hale Akpinar

Background and aimsIn this study, we investigated whether reticulated platelets (RP) would be useful markers in the evaluation of ulcerative colitis (UC) activity and also aimed to gain indirect information about the platelet kinetics.Materials and methodsComplete blood count, C-reactive protein, erythrocyte sedimentation rate, and proportion of RP were measured in 16 active, 21 inactive UC patients, and 20 healthy blood donors. UC activity was assessed by Truelove–Witts criteria.ResultsMean platelet count was increased in patients with active compared to inactive UC (p = 0.008) or healthy donors (p = 0.000). Mean platelet volume (MPV) was significantly decreased in patients with active compared to inactive (p = 0.015) and healthy donors (p = 0.001). RP values was significantly decreased in active and inactive UC groups compared to healthy donors (p = 0.000, p = 0.000, respectively), while there was no significant difference between active and inactive UC patients (p = 0.980). Significant negative correlation between platelet count and MPV in patients with active UC (r = −0.542, p = 0.030) was observed.ConclusionsRP values is reduced in active and inactive UC patients compared to healthy donors. To our knowledge, this is the first study about proportion of RP with UC in literature. However, the role of low RP values have not been determined clinically. Further studies are needed to evaluate the role of platelet abnormalities and changes in megakaryopoiesis caused by inflammatory state on low MPV and RP values during the course of UC.


Digestive Endoscopy | 2007

CASE OF FASCIOLIASIS: EXTRACTION WITH ENDOSCOPIC RETROGRADE CHOLANGIOGRAPHY

Mesut Akarsu; Murat Meral; Sakine Bahceli; Dilek Solmaz; Hasan Kayahan; Müjde Soytürk; Hale Akpinar

Fascioliasis is a worldwide zoonotic infection with fasciola hepatica and fasciola gigantica. The zoonoses are particularly endemic in sheep‐raising countries and are also endemic in Turkey. Clinical features of fascioliasis relate to the stage and intensity of infection. Fasciola hepatica infection comprises two stages: hepatic and biliary, with different signs and symptoms. Cholestatic symptoms may be sudden, but, in some cases, they may be preceded by a long period of fever, eosinophilia and vague gastrointestinal symptoms. We reported a case with fever and upper‐quadrant abdominal pain since 3 months that comes from an area endemic for fasciola hepatica, with suspected imaging about fasciola hepatica in common bile duct on ultrasonography. After that, fasciola hepatica was extracted with endoscopic retrograde cholangiography.


Digestive Diseases and Sciences | 2012

Evaluation of Early Atherosclerosis in Patients with Inflammatory Bowel Disease

Hasan Kayahan; Ismail Sari; Neşat Çullu; Fahize Yuksel; Serdal Demir; Mesut Akarsu; Yigit Goktay; Belkis Unsal; Hale Akpinar


The Turkish journal of gastroenterology | 2008

Diffuse gastrointestinal involvement of mantle cell lymphoma.

Murat Meral; Demirpençe M; Can Gönen; Mesut Akarsu; Hasan Kayahan; Fatih Demirkan; Aydanur Kargi; Hale Akpinar


The Turkish journal of gastroenterology | 2011

Does glucagon like peptide-2 receptor expression have any effect on the development of human colorectal cancer?

Göksel Bengi; Hasan Kayahan; Mesut Akarsu; Anil Aysal; Ozgul Sagol; Murat Meral; Hale Akpinar


The Turkish journal of gastroenterology | 2008

A case of angiographically verified non-occlusive mesentery ischemia induced by digitalis.

Hasan Kayahan; Ömer Topalak; Göktay Y; Müjde Soytürk; Murat Meral; Başaran K; Dağlar O


European Journal of Gastroenterology & Hepatology | 2018

Is ileocecal valve intubation essential for routine colonoscopic examination

Murat Meral; Göksel Bengi; Hasan Kayahan; Mesut Akarsu; Müjde Soytürk; Ömer Topalak; Hale Akpinar; Ozgul Sagol


European Journal of Rheumatology | 2014

Endoscopic appearance of Henoch-Schönlein purpura

Gercek Sen; Dilek Solmaz; Hasan Kayahan; Mustafa Ozmen


Turkiye Klinikleri Journal of Gastroenterohepatology | 2010

Perkütan Endoskopik Gastrostomi Endikasyonları, Komplikasyonları, Hasta Memnuniyeti

Omer Binicier; Müjde Soytürk; Göksel Bengi; Hatice Çilem Binicier; Murat Meral; Hasan Kayahan; Hale Akpinar

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Hale Akpinar

Dokuz Eylül University

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Mesut Akarsu

Dokuz Eylül University

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Murat Meral

Dokuz Eylül University

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Can Gönen

Dokuz Eylül University

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Dilek Solmaz

Dokuz Eylül University

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Ozgul Sagol

Dokuz Eylül University

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