Şahin, Erkan

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Profile URL
https://hdl.handle.net/20.500.14365/6937
Name Variants
Sahin, E.
Sahin, Erkan
Job Title
Email Address
erkan.sahin@ieu.edu.tr
Main Affiliation
09.02. Internal Sciences
Status
Current Staff
Website
ORCID ID
Scopus Author ID
56415930300
Turkish CoHE Profile ID
5B897D7BF9187046
Google Scholar ID
Y7CcMXMAAAAJ
WoS Researcher ID
JAZ-3138-2023

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19

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43

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22

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37

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Scholarly Output

4

Articles

3

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8/13

Supervised MSc Theses

0

Supervised PhD Theses

0

WoS Citation Count

2

Scopus Citation Count

2

WoS h-index

1

Scopus h-index

1

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0

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0

WoS Citations per Publication

0.50

Scopus Citations per Publication

0.50

Open Access Source

2

Supervised Theses

0

JournalCount
Acta Medica Alanya1
Fertılıty And Sterılıty1
INJURY-International Journal of the Care of the Injured1
Journal of Surgical Case Reports1
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Now showing 1 - 4 of 4
  • Thumbnail Image
    Article
    Citation - WoS: 2
    Citation - Scopus: 2
    Differential Diagnosis of Submucosal Gastric Tumors: Gastric Schwannomas Misdiagnosed as Gists
    (Oxford Univ Press, 2024) Unver, Mutlu; Ertekin, Suleyman Caglar; Kebapci, Eyup; Olmez, Mustafa; Ergin, Erhan; Ozturk, Safak; Ortac, Ragip
    Schwannomas commonly occur in the head and neck region but are rarely seen in the gastrointestinal tract; the stomach and small intestine are the most commonly involved sites. These tumors are usually misdiagnosed as gastrointestinal stromal tumors (GISTs) before histopathological confirmation due to radiological similarity. GI schwannomas show positivity for S100 protein and vimentin but are negative for CD 117 and CD 34, which helps in differentiating the tumor from GISTs. Case 1: a 70-year-old woman was referred to our hospital by complaints of abdominal pain and discomfort. Upper GI endoscopy demonstrated a protruding lesion at the lesser curvature of the gastric body, and fine-needle aspiration biopsy showed chronic inflammation without malignancy. Since the lesion was suspected to be GIST, this patient had surgery, and a gastric schwannoma was resected successfully. Case 2: a 66-year-old female with anemia and abdominal discomfort was found to have a submucosal elevated mass at the greater curvature of the antrum. Fine needle aspiration biopsy was suggestive of a spindle cell tumor resembling GIST. The patient underwent subtotal gastrectomy with Roux-en-Y reconstruction. Histopathology confirmed schwannoma. It is necessary to differentiate gastric schwannomas from other submucosal tumors of the stomach, especially GISTs. Surgical complete resection of schwannomas usually has a good prognosis with a low probability of recurrence. Though rare, gastric schwannomas should be included in the differential diagnosis of submucosal gastric tumors because the correct identification of this tumor type helps in proper management and evasion of unnecessary extensive surgery.
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    Article
    Diagnostic Accuracy of Kidney Shear Wave Elastography at the Diagnosis of Ureteral Stones
    (2022) Serter, Selim; Yıldırım, Mahir Utku; Ors, Bumin; Şahin, Erkan; Solak, Aynur
    Aim: To determine the efficacy of kidney shear wave elastography (SWE) in patients diagnosed with ureteral stones Method: Both kidneys of 30 patients were evaluated prospectively with SWE. The ureteral stone size and the degree of hydronephrosis were determined by sonographic examination. The contralateral kidney was accepted as the control parameter. Stone size, grade of hydronephrosis and kidney shear wave speed changes were noted and their relations were examined for statistical significance. Results: Affected kidney group had significantly increased SWE values than the control group. (3.87+-1.22 vs 2.06+-0.72 m/sec) (p=0.01). Neither the stone size nor the kidney SWE values showed a correlation with the gender. There was a positive correlation between the grade of hydronephrosis and the stone size (p=0.047, r=0,36). Kidneys with grade 2 hydronephrosis had significantly higher SWE values than those with grade 1 hydronephrosis. Conclusion: SWE is a promising tool to observe the parenchymal elasticity changes in patients with hydronephrosis secondary to ureteral stones. Further studies are necessary to confirm the research results.
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    Conference Object
    Novel Tool for Endonietrial Assessment in Embryo Transfer Cycles: Endometrial Elastograpry.
    (Elsevier Science Inc, 2022) Emirdar, Volkan; Gode, Funda; Pala, Ibrahim; Sahin, Erkan
    [Abstract Not Available]
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    Article
    Toward a New Era in Fracture Imaging: Zero Echo Time MRI Vs CT in Intra-Articular Distal Radius Fractures — A Proof-of Study
    (Elsevier Ltd, 2025) Kaymakoğlu, M.; Kolac, U.C.; Bahsi, A.; Filibeli, M.; Türken, M.A.; Dogan, K.; Şahin, E.
    Background Computed tomography (CT) is the current reference standard for evaluating intra-articular distal radius fractures, however concerns remain regarding radiation exposure and limited soft tissue assessment. Zero Echo Time (ZTE) MRI is a novel technique that enables direct cortical bone imaging with contrast similar to CT, while avoiding radiation. This proof-of-concept study aimed to compare the diagnostic performance of ZTE MRI with CT in fracture classification, articular involvement, and treatment planning. Methods In this prospective comparative study, 28 patients with acute intra-articular distal radius fractures underwent both CT and ZTE MRI within 7 days of injury. Fractures were classified according to AO/OTA, Fernandez classifications, quantitative parameters (angulation, radial inclination, ulnar variance, articular fragment count) and binary findings (distal ulna fracture, distal radioulnar joint (DRUJ) involvement) were assessed. Two orthopedic surgeons and two musculoskeletal radiologists independently reviewed all images. Inter- and intraobserver agreement was calculated using Cohen’s and Fleiss’ kappa and intraclass correlation coefficients. Results Agreement among surgeons for AO/OTA classification was good on CT (κ = 0.767) and good on ZTE MRI (κ = 0.680). For Fernandez classification, agreement was good on CT (κ = 0.780) and ZTE (κ = 0.736). Surgeons demonstrated higher agreement (κ ≈0.68–0.78) than radiologists (κ ≈0.56–0.65). For binary parameters, agreement among radiologists was very good (κ = 0.820–0.880), while inter-surgeon agreement ranged from moderate to good (κ = 0.500–0.714). Continuous measures showed good reproducibility for angulation (ICC = 0.762–0.858), but lower values for inclination among surgeons (ICC ≤ 0.492–0.531). ZTE MRI demonstrated sensitivity, specificity, and accuracy comparable to CT for classification and detection of DRUJ involvement and distal ulna fractures (approximately 85–93 %). Treatment decisions showed very good agreement (κ = 0.855), with ZTE altering CT-based management in 3/28 (10.7 %) cases for Surgeon 1 and 2/28 (7.1 %) for Surgeon 2. Conclusion ZTE MRI provides diagnostic performance comparable to CT for intra-articular distal radius fractures, with high reliability for fracture classification, joint involvement, and treatment decision-making. As a radiation-free modality that also permits concurrent soft tissue assessment, ZTE MRI may serve as a promising alternative to CT in selected clinical scenarios. © 2025 Elsevier Ltd.