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ARRS COTW- October 29, 2018
NEURORADIOLOGY: Pediatric/Congenital Case Author: Sumit Pruthi, MBBS, Monroe Carrell Jr. Children’s Hospital at Vanderbilt University History 6-year-old boy with fever, irritability, and headache. Imaging Findings Axial (A) and coronal (B) single-shot T2-weighted MR images show moderate lateral ventricular dilatation with transependymal flow of CSF. Also evident in B is a moderate amount of fluid tracking along the…
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ARRS COTW- October 15, 2018
BREAST IMAGING: Breast MRI Case Author: Peter R. Eby, MD, Virginia Mason Medical Center History 42-year-old woman with recent excision of desmoid fibromatosis with positive margins and a persistent palpable abnormality. Imaging Findings Targeted ultrasound image (A) of the right breast at the site of the palpable abnormality and previous excisional biopsy shows postsurgical architectural…
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ARRS COTW- September 24, 2018
GASTROINTESTINAL IMAGING: Liver Case Author: Cynthia Santillan, MD, University of California, San Diego History 68-year-old woman with abdominal pain. Imaging Findings Axial T2-weighted MR images of the abdomen (A and B) show innumerable thin-walled high-signal-intensity structures of varying sizes throughout the liver. Axial T2-weighted image of the kidneys (C) shows nearly complete replacement of the…
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ARRS Case of the Week- June 4, 2018
BREAST IMAGING: Breast MRI Case Author: Peter R. Eby, MD, Virginia Mason Medical Center History 68-year-old woman undergoing screening MRI 1 year after lumpectomy. Imaging Findings Axial (A) and sagittal (B) contrast-enhanced T1-weighted fat-suppressed breast MR images show a lobulated mass with irregular margins and rim enhancement in the lower outer right breast. T1-weighted image…
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ARRS Case of the Week- May 21, 2018
MUSCULOSKELETAL IMAGING: Metabolic/Hematologic Case Author: Daniel E. Wessell, MD, PhD, Mallinckrodt Institute of Radiology at Washington University in Saint Louis History 27-year-old man with left knee pain. Imaging Findings Coronal fat-suppressed T2-weighted fast spin-echo (A) and T1-weighted spin-echo (B) MR images of the left knee show nodular replacement of the normal fatty marrow. T1-weighted MR…
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ARRS Case of the Week- Apr 16, 2018
PEDIATRIC RADIOLOGY: Musculoskeletal Radiology Case Author: Krista L. Birkemeier, MD, Cincinnati Children’s Hospital Medical Center History 13-year-old male baseball player with right shoulder pain for 3 months who reports no trauma when asked about it. Imaging Findings Frontal radiograph of the right shoulder (A) shows mild widening and irregularity (arrow) of the lateral aspect…
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ARRS Case of the Week- Apr 2, 2018
BREAST IMAGING: Breast MRI Case Author: Peter R. Eby, MD, Virginia Mason Medical Center History 47-year-old woman without symptoms but at high risk undergoing screening breast MRI. Imaging Findings Axial (A) and sagittal (B) contrast-enhanced T1-weighted fat-suppressed breast MR images show a segmental area of linear nonmasslike enhancement (NMLE) in the 9 o’clock position, middle…
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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- 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 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…