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Pancreatic Islet Cell Amyloidosis Manifesting as a Large Pancreas
Mehmet Ruhi Onur,Mehmet Yalnız,Ahmet Kursad Poyraz,Ibrahim Hanifi Özercan,Yusuf Ozkan 대한영상의학회 2012 Korean Journal of Radiology Vol.13 No.1
A 39-year-old female patient presented to our hospital with epigastric pain lasting for two months. Laboratory results showed impaired glucose tolerance. Ultrasonography of the patient showed a hypoechoic, diffusely enlarged pancreas. CT revealed a large pancreas, with multiple calcifications. On MRI, a diffusely enlarged pancreas was seen hypointense on both T1- and T2-weighted images with heterogeneous enhancement after gadolinium administration. A biopsy of the pancreas revealed primary amyloidosis of islet cells. Decreased signal on T1-weighted images without inflammation findings on CT and MRI were clues for the diagnosis.
Secondary Tumors of the Urinary System: An Imaging Conundrum
Ali Devrim Karaosmanoglu,Mehmet Ruhi Onur,Musturay Karcaaltincaba,Deniz Akata,Mustafa Nasuh Ozmen 대한영상의학회 2018 Korean Journal of Radiology Vol.19 No.4
Imaging features of metastases to the urinary system may closely mimic primary urinary tract tumors, and differential diagnosis by imaging alone may be problematic or even impossible in some cases. The main purpose of this article was to amiliarize radiologists with imaging findings of metastasis to the urinary system on cross-sectional imaging, with an emphasis on abdominal and pelvic computed tomography and magnetic resonance imaging. In addition, we review the clinical importance and implications of metastases to the urinary tract and provide information on diagnostic work-ups.
Unusual Malignant Solid Neoplasms of the Kidney: Cross-Sectional Imaging Findings
Ali Devrim Karaosmanog˘lu,Mehmet Ruhi Onur,Ali Shirkhoda,Mustafa Ozmen,Peter F. Hahn 대한영상의학회 2015 Korean Journal of Radiology Vol.16 No.4
Malignant kidney neoplasms are the most frequently encountered solid kidney masses. Although renal cell carcinoma is the major renal malignancy, other solid malignant renal masses should be considered in the differential diagnosis of solid renal masses that do not contain a macroscopic fatty component. In this pictorial essay, we present the imaging findings of a primitive neuroectodermal tumor, primary liposarcoma of the kidney, primary neuroendocrine tumor, leiomyosarcoma, synovial sarcoma, malignant fibrous histiocytoma, sclerosing fibrosarcoma and renal metastasis of osteosarcoma.