Publications by authors named "Ahmet Yassa"

We compared gender dysphoria (GD) patients and their same-sex siblings in terms of their 2D:4D ratios, which may reflect prenatal exposure to androgen, one of the possible etiological mechanisms underlying GD. Sixty-eight GD patients (46 Female-to-Male [FtM]; 22 Male-to-Female [MtF]), 68 siblings (46 sisters of FtMs; 22 brothers of MtFs), and 118 heterosexual controls (62 female; 56 male) were included in the study. FtMs were gynephilic and MtFs were androphilic.

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Background: This study evaluates the achievability of CT volumetry of pancreatic cancer and its correlation with pTNM stage and survival.

Methods: Tumor volume was measured from contrast enhanced CT images of 58 patients who undergo curative resection for pancreatic cancer using the Segment Editor module implemented in 3D-Slicer-a free open source software platform. Receiver operating characteristic (ROC) analysis was used to evaluate correlation between Tvol and pTNM staging.

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Objective: Reliable data regarding maternal mental well-being during the Severe Acute Respiratory syndrome coronavirus-2 (SARS-CoV-2) pandemic are scarce. This study aimed to assess the state/trait anxiety and obsessive-compulsive symptoms of pregnant women and compare those with the non-pregnant population using patient-reported validated outcome measures.

Materials And Methods: This prospective case-control study was conducted at a tertiary 'Coronavirus Pandemic Hospital' in İstanbul, Turkey in April, 2020.

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Introduction: Immune thrombocytopenia is an autoimmune disorder associated with increased thrombocyte destruction and impaired production in the bone marrow. Proposed mechanisms include an antibody or autoreactive T-cell-associated autoimmunity and thrombopoietin deficiency among others. Clinical manifestations are predominantly mucocutaneous hemorrhages including petechiae, purpura, mucosal bleeding in the urinary or the gastrointestinal tracts, menorrhagia, and epistaxis.

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COVID-19 is a novel type of the coronavirus family with an incompletely described clinical course. Little is known about the psychological aspects, particularly for vulnerable populations including pregnant women. To understand the attitude, concerns, and knowledge of the non-infected pregnant women toward the COVID-19 outbreak in order to constitute base data for detailed counseling and to develop targeted messages.

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Background: fusions are targetable drivers in non-small-cell lung cancer (NSCLC). However, patients with NSCLC harboring rearrangements without a fusion partner identified in DNA have also been shown to respond to ALK inhibitors. We aimed to characterize complex variants that may predict sensitivity to multiple approved ALK inhibitors.

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The influence of brain radiotherapy on neurocognition is a major concern. Social cognition is a mental process in the meaning of social interaction and the recognition of facial emotion is a domain of social cognition. Thus, we aimed to investigate the early effect of whole brain radiotherapy on facial emotion recognition ability.

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Background: Patients suffering from obsessive compulsive disorder (OCD), despite heightened levels of functional impairment and disability, often wait several years before starting pharmacological treatment. The interval between the onset of a specific psychiatric disorder and administration of the first pharmacological treatment has been conceptualized as the duration of untreated illness (DUI). The DUI has been increasingly investigated as a predictor of long-term outcomes for OCD and other anxiety disorders.

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