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Soft Tissue Signs- The Ankle
Introduction An equivocal fracture appearance should be considered in the context of other information such as Patient history Clinical presentation Radiographic soft tissue signs This page will examine the radiographic soft tissue signs of bony injury of the ankle- what they are, their plain film appearances, their limitations, and their utility. Ankle Effusion- The Teardrop…
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ARRS Case of the Week- Sep 25, 2017
ULTRASOUND: Abdomen Case Author: Ulrike M. Hamper, MD, MBA, Johns Hopkins University History 56-year-old man with incidental finding of pelvic mass on a CT scan obtained after a motor vehicle accident and history of craniotomy for anaplastic astrocytoma. Imaging Findings Sagittal (A) and transverse (B) ultrasound images of the pelvis show a 9.7 × 5.6…
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ARRS Case of the Week- Sep 18, 2017
GENITOURINARY IMAGING: Female Pelvis Case Author: Courtney Coursey Moreno, MD, Emory Healthcare History 35-year-old woman with occasional pain in the right lower quadrant. Imaging Findings Axial T1-weighted fat-saturated MR image (A) shows a 1.5-cm mass (arrow) with intermediate to high signal intensity in the subcutaneous fat of the right lower quadrant that extends into the…
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ARRS Case of the Week- Aug 28, 2017
CARDIOVASCULAR IMAGING: Coronary Arteries Case Author: Eric Kimura-Hayama, MD, Instituto Nacional de Cardiologia Ignacio Chavez History 55-year-old man with hypertension and dyslipidemia who reports having dyspnea. Imaging Findings Curved planar reformatted CT image of the right coronary artery (A) and corresponding short-axis images (B) obtained at the level between the white lines in A show…
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ARRS Case of the Week- Aug 21, 2017
NUCLEAR MEDICINE: Musculoskeletal Case Author: Gary A. Ulaner, MD, PhD, Memorial Sloan-Kettering Cancer Center History 58-year-old woman with bilateral leg pain and stiffness. Imaging Findings Posterior (left) and anterior (right) planar bone scans show bilateral diffuse periosteal uptake in the lower extremities. Hypertrophic osteoarthropathy Insufficiency fractures Shin splints Synovitis Diagnosis Hypertrophic osteoarthropathy Teaching Points Hypertrophic…
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Liposclerosing Myxofibrous Tumour
J McNamee, G Briggs, D Gracey. Musgrave Park Hospital, Stockman’s Lane, Belfast, Norther Ireland BT9 7JB Section: Musculoskeletal System Published: 2012, Jul. 17 Patient: 53 year(s), female Clinical History Persistent left proximal hip pain for three months. Tender on examination. No history of trauma. Imaging Findings X-ray of the pelvis shows a well-defined lucency within…
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Cecal Volvulus: What the Radiologist Needs to Know
Michele Tonerini, Francesca Pancrazi, Silvia Lorenzi, Federica Pacciardi, Francesco Ruschi, Laura Turturici, Pietro Bemi Abstract Cecal volvulus is a quite rare pathologic condition and therefore sometimes misdiagnosed, but is indeed more common than thought. It occurs with a specific acute onset abdominal pain associated to nausea and vomiting, so that it often poses a diagnostic…
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ARRS Case of the Week- August 14, 2017
MUSCULOSKELETAL IMAGING: Arthritis of the Proximal Joints Case Author: Kirkland W. Davis, MD, University of Wisconsin of School of Medicine, and Public Health History 55-year-old man with sciatica. Imaging Findings Coronal T1-weighted MR image of hips (A) and coronal fat-suppressed T2-weighted MR image of the left hip (B) show large intraarticular erosions of the femurs…
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Benign Bone Tumors
Radiology Key Benign Tumors and Tumor-Like Lesions III: Fibrous, Fibroosseous, and Fibrohistiocytic Lesions Fibrous Cortical Defect and Nonossifying Fibroma Fibrous cortical defects and nonossifying (nonosteogenic) fibromas are the most common fibrous lesions of bone and are predominantly seen in children and adolescents. More common in boys than in girls, they have a predilection for the…
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ARRS Case of the Week- August 7, 2017
NEURORADIOLOGY: Vascular Case Author: Megan K. Strother, MD, Vanderbilt University Medical Center History 22-year-old man with sudden left-sided weakness. Imaging Findings Parametric maps from CT perfusion study show decreased cerebral blood flow (A), decreased cerebral blood volume (B), and delayed mean transit time (C) in the right anterior and middle cerebral artery territories. Infarction Ischemia…