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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…
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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- Dec 11, 2017
PEDIATRIC RADIOLOGY: Musculoskeletal Radiology Case Author: Ricardo Restrepo, MD, Miami Children’s Hospital History 14-year-old boy with right knee pain for 3 months who reports no trauma when asked about it. Imaging Findings Frontal radiograph of the knee (A) shows a well-defined round lucent lesion involving the medial femoral condyle (arrow). Coronal fat-suppressed T2-weighted MR image…
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ARRS Case of the Week- Dec 4, 2017
ULTRASOUND: Abdomen Case Author: Ulrike M. Hamper, MD, MBA, John Hopkins University History 87-year-old man with right upper quadrant discomfort and hypoglycemia. Imaging Findings Sagittal (A) and transverse (B) gray-scale ultrasound images of the pancreas show a 1.4 × 1.1 × 1.3 cm hypoechoic mass (calipers) in the pancreatic head just medial to a small…
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ARRS Case of the Week- Nov 20, 2017
BREAST IMAGING: Calcifications Case Author: Jiyon Lee, MD, New York University School of Medicine History 49-year-old woman participating in surgical consultation after recent ultrasound-guided core biopsy of a new palpable lump in the right lateral breast showed lobular carcinoma in situ, classic subtype; the actual diagnosis and appropriate next step in management must be determined.…
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ARRS Case of the Week- Nov 13, 2017
GASTROINTESTINAL IMAGING: Pancreas Case Author: Ramit Lamba, MBBS, MD, University of California, Davis History 45-year-old woman with finding of asymptomatic calcification in the left upper quadrant on a chest radiograph obtained as part of an employment health screening. Imaging Findings Axial (A) and sagittal (B) CT images though the upper abdomen show a cystic encapsulated…
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ARRS Case of the Week- Nov 6, 2017
MUSCULOSKELETAL IMAGING: Arthritis of the Proximal Joints Case Author: Kirkland W. Davis, MD, University of Wisconsin School of Medicine and Public Health History 28-year-old man with hip and back pain. Imaging Findings Anteroposterior radiograph of the pelvis shows symmetric narrowing of the hip joint spaces and osteophytes. Enthesophyte production (whiskering) is evident at the ischial…
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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…