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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- Feb 16, 2018
CHEST IMAGING: Diaphragm and Pleura Case Author: Rachna Madan, MD Brigham Women’s Hospital History 60-year-old woman with cervical spondylosis, recent cervical spinal surgery, and worsening dyspnea; chest radiography has been performed, and the next step must be determined. Imaging Findings Posteroanterior (A) and lateral (B) chest radiographs show an elevated hemidiaphragm. Chest CT Electromyography Fluoroscopic…
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ARRS Case of the Week- Feb 12, 2018
PEDIATRIC RADIOLOGY: Musculoskeletal Radiology Case Author: Ricardo Restrepo, MD, Miami Children’s Hospital History 12-year-old male soccer player with right foot pain who reports no recent trauma when asked about it. Imaging Findings Lateral radiograph of the ankle (A) shows an elongated and prominent anterior process of the calcaneus (arrow). Sagittal STIR MR image (B) shows…
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ARRS Case of the Week- Feb 5, 2018
ULTRASOUND: Abdomen Case Author: Ulrike M. Hamper, MD, MBA, Johns Hopkins University History 32-year old man with HIV infection and AIDS and acute renal failure. Imaging Findings Sagittal gray-scale ultrasound image of the right kidney (RK) (A) shows increased renal parenchymal echogenicity and an irregular, hypoechoic perirenal soft-tissue mass. A small hypoechoic liver lesion also…
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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 22, 2018
BREAST IMAGING: Calcifications Case Author: Jiyon Lee, MD, New York University School of Medicine History 66-year-old woman without symptoms undergoing routine annual surveillance mammography with history of malignant lumpectomy, radiation, and chemotherapy for two sites in the left breast 10 years earlier. Imaging Findings Mediolateral oblique (A) and exaggerated craniocaudal (B) mammograms of the left…
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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- Jan 2, 2018
NEURORADIOLOGY: Vascular Case Author: Megan K. Strother, MD, Vanderbilt University Medical Center History 86-year-old man with intermittent dizziness, nausea, and vomiting. Imaging Findings Axial T1-weighted contrast-enhanced MR image (A) shows smooth dural enhancement. Axial T2-weighted MR image (B) shows a cystic extraaxial lesion in the anterior portion of the left middle cranial fossa and an…