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ARRS COTW- November 19, 2018
CARDIOVASCULAR IMAGING: Thoracic Arteries Case Author: Diana Litmanovich, MD, Beth Israel Deaconness Medical Center History 56-year-old woman with shortness of breath and known coagulopathy. Imaging Findings Axial (A) and coronal reformatted (B) contrast-enhanced MDCT images of the chest show a linear filling defect in the right lower lobe pulmonary artery. Correlating lung window CT image…
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ARRS COTW- October 1, 2018
GENITOURINARY IMAGING: Collecting System, Ureter, Bladder Case Author: Rupan Sanyal, MD, University of Alabama at Birmingham History 40-year-old man with chronic right flank pain. Imaging Findings Axial contrast-enhanced CT image (A) shows severe dilatation of the right renal collecting system. Axial CT image (B) caudal to A shows an enhancing tubular structure (arrowheads) coursing along…
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ARRS COTW- September 10, 2018
CHEST IMAGING: Immunocompromised Case Author: Maria Shiau, MD, New York University School of Medicine, Langone Medical Center History 57-year-old man with fever and neutropenia after heart transplant. Imaging Findings Axial CT images in lung windows (A and B) show patchy, nodular ground-glass opacity in the right middle and left lower lobes. Diagnosis Invasive aspergillosis Teaching…
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ARRS COTW- July 30, 2018
GENITOURINARY IMAGING: Collecting System, Ureter, Bladder Case Author: Rupan Sanyal, MD, University of Alabama at Birmingham History 48-year-old man with 3 months of fever and persistent right flank pain. Imaging Findings Axial contrast-enhanced CT image (A) shows a dilated upper right renal calyx with a focus of gas (arrow). Axial CT image (B) caudal to…
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ARRS COTW- July 16, 2018
GASTROINTESTINAL IMAGING: Liver Case Author: Hanna M. Zafar, MD, MHS, University of Pennsylvania History 55-year-old man with left flank pain; CT has been performed, and a recommendation based on the findings must be made. Imaging Findings Axial unenhanced CT images (A and B) show diffuse low attenuation of the liver (–2 HU). An ill-defined area…
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ARRS COTW- July 2, 2018
CHEST IMAGING: Immunocompromised Case Author: Maria Shiau, MD, New York University School of Medicine, Langone Medical Center History 47-year-old man with positive HIV status, CD4 lymphocyte count of 500/mL, a painful penile lesion, and right lower quadrant pain. Imaging Findings Axial CT image (A) at the level of the aortic arch shows enlarged, necrotic anterior…
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ARRS COTW- June 11, 2018
GENITOURINARY IMAGING: Collecting System, Ureter, Bladder Case Author: Rupan Sanyal, MD, University of Alabama at Birmingham History 26-year-old woman with pelvic pain and multiple skin lesions. Imaging Findings Axial (A) and coronal (B) contrast-enhanced CT images show severe diffuse bladder wall thickening. Axial bone window CT image (C) shows widening of the sacral neural foramen…
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ARRS Case of the Week- May 15, 2018
NEURORADIOLOGY: Pediatric/Congenital Case Author: Sumit Pruthi, MBBS, Monroe Carell Jr. Children’s Hospital at Vanderbilt University History 14-year-old girl with low back pain Imaging Findings Posteroanterior radiograph (A) and 3D volume-rendered CT scan (B) of the spine shows moderate right convex thoracolumbar scoliosis and a wedge-shaped vertebral body at thoracolumbar junction. Diagnosis Hemivertebral body anomaly (congenital…
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ARRS Case of the Week- May 7, 2018
CHEST IMAGING: Immunocompromised Case Author: Maria Shiau, MD, New York University School of Medicine, Langone Medical Center History 40-year-old man with AIDS, increasing cough, and low-grade fever. Imaging Findings Posteroanterior chest radiograph (A) shows multiple bilateral pulmonary nodules and masses. Axial CT images in lung windows (B–E) show a right upper lobe nodule and multiple…
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ARRS Case of the Week- Apr 30, 2018
CARDIOVASCULAR IMAGING: Thoracic Arteries Case Author: Diana Litmanovich, MD, Beth Israel Deaconess Medical Center History 89-year-old man with chest pain. Imaging Findings MDCT angiogram of the chest (A) shows a large, irregular soft-tissue filling defect along the posterior aspect of the distal aortic arch that protrudes into the lumen. Coronal (B) and sagittal (C) reformatted…