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ARRS Case of the Week- Mar 27, 2018
GENITOURINARY IMAGING: Collecting System, Ureter, Bladder Case Author: Matthew S. Hartman, MD, Allegheny General Hospital History 45-year-old diabetic woman with microscopic hematuria Imaging Findings Coronal volume-rendered reconstruction of excretory phase CT urogram (A) shows bilateral irregular calyces with contrast-filled clefts. Coronal reformatted image (B) shows contrast material from the collecting system filling a cavity in…
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ARRS Case of the Week- Mar 19, 2018
GASTROINTESTINAL IMAGING: Pancreas Case Author: Ramit Lamba, MBBS, MD, University of California, Davis History 57-year-old man with chronic pancreatitis and severe abdominal pain, nausea, vomiting, low hematocrit, and bleeding at the jejunostomy site after recent abdominal surgery for mesenteric ischemia; CT has been performed and the next step must be determined. Imaging Findings Axial CT…
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ARRS Case of the Week- Mar 7, 2018
NEURORADIOLOGY: Irregular Arterial Stenosis Case Author: Megan K. Strother, MD, Vanderbilt University Medical Center History 45-year-old woman with 2 days of headache and confusion. Imaging Findings Sagittal maximum-intensity-projection image from a CT angiogram shows irregular arterial narrowing in the distal anterior cerebral artery (arrow). Diagnosis Vasculitis Teaching Points Results of CSF analysis are abnormal in…
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ARRS Case of the Week- Feb 28, 2018
CARDIOVASCULAR IMAGING: Thoracic Arteries Case Author: Diana Litmanovich, MD, Beth Israel Deaconess Medical Center History 1-month-old female with mild wheezing and costal retraction with dusky appearance during crying Imaging Findings High-voltage radiograph of the mediastinum (A) shows diffuse narrowing of the trachea and a wide-angle carina. Axial contrast-enhanced CT images of the chest (B-E) show…
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ARRS Case of the Week- Jan 28, 2018
GENITOURINARY IMAGING: Collecting System, Ureter, Bladder Case Author: Rupan Sanyal, MD, University of Alabama at Birmingham History 58-year-old man with hematuria. Imaging Findings Axial unenhanced (A) and contrast-enhanced (B) CT images through the bladder show an enhancing exophytic mass (arrow) involving the left bladder wall. Axial delayed CT image (C) shows the bladder filled with…
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ARRS Case of the Week- Jan 8, 2018
MUSCULOSKELETAL IMAGING: Metabolic/Hematologic Case Author: Daniel E. Wessell, MD, PhD, Mallinckrodt Institute of Radiology at Washington University in Saint Louis History 76-year-old man with recent 80-pound (36 kg) weight loss. CT has been performed, and the next best step based on the CT findings must be determined. Imaging Findings Axial pelvic CT images at the…
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ARRS Case of the Week- Dec 26, 2017
CARDIOVASCULAR IMAGING: Coronary Arteries Case Author: Eric Kimura-Hayama, MD, Instituto Nacional de Cardiologia Ignacio Chavez History 65-year-old man with new onset of chest pain after surgical revascularization; CT angiography has been performed, and the next step must be determined. Imaging Findings Frontal (A) and left lateral (B) volume-rendered CT images show two left mediastinal vascular…
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ARRS Case of the Week- Dec 18, 2017
CHEST IMAGING: Diaphragm and Pleura Case Author: Rachna Madan, MD, Brigham and Women’s Hospital History 62-year-old man with lower chest and abdominal pain and a feeling of fullness. Imaging Findings Posteroanterior (A) and lateral (B) chest radiographs show a large mass of variable radiographic density in the right lower hemothorax and right cardiophrenic angle. In…
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ARRS Case of the Week- Oct 30, 2017
From http://www.arrs.org/ARRSLIVE/CaseOfTheWeek. NEURORADIOLOGY: Vascular Case Author: Megan K. Strother, MD, Vanderbilt University Medical Center History 84-year-old man with altered mental status. Imaging Findings Parametric maps from CT perfusion study show increased cerebral blood flow (A), increased cerebral blood volume (B), and delayed mean transit time (C) in the right parietal lobe. Cerebral hyperperfusion syndrome Hypercapnia Ischemia…
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ARRS Case of the Week- Oct 23, 2017
From http://www.arrs.org/ARRSLIVE/CaseOfTheWeek. CARDIOVASCULAR IMAGING: Coronary Arteries Case Author: Rachna Madan, MD, Brigham and Women’s Hospital History 62-year-old man with hypertension, atypical chest pain, and perfusion scintigraphic finding of mild apical ischemia. Imaging Findings Axial (A), curved planar (B), and short-axis (C) reformatted ECG-gated coronary angiograms reconstructed at 75% of the R-R interval show a lesion…