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Shoulder Cysts
Dr. Phillip Tirman discusses the MR appearance of a subset of shoulder abnormalities with varied clinical presentations.
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Dorsal Arachnoid Webs
Dr. Malisa Lester discusses the imaging and clinical features of an intraspinal abnormality in which the MR diagnosis may be challenging.
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Pisotriquetral Joint Pathology
Dr. Benjamin Eyer discusses the utility of MRI in the evaluation of an under-appreciated cause of wrist pain.
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Chronic Recurrent Multifocal Osteomyelitis
A 10 year-old female presents with a several-week history of atraumatic pain and swelling in the right clavicular region. A frontal radiograph with 15-degree cephalic angulation (1a) and a fat-suppressed coronal proton density-weighted image (1b) are provided. What are the findings? What are your diagnostic considerations?
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Scapular Winging
An 18-year-old was involved in a motor vehicle accident 8 weeks prior. He reports pain and weakness with deformity of the scapula. MRI was performed to assess for muscle tear or other injury. Initial radiograph frontal radiograph (1a) performed 4 weeks prior to the MRI. Coronal T2 fat-suppressed image provided (1b).
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Developmental Talocalcaneal Coalitions and Associated Conditions
A 37-year-old man presented with left ankle pain that began while serving in the military. The pain is aggravated by prolonged standing and walking, and it prevents him from running. An anteroposterior (AP) radiograph (1A), coronal CT image (1B), and coronal oblique (1C), and sagittal (1D) T2-weighted fat-suppressed (T2 FS) magnetic resonance (MR) images are provided.
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Hammer, Mallet, and Claw Toe Deformities of the Lesser Toes
A 50-year-old female presents with pain and swelling for 3 weeks. MRI was performed because of clinical suspicion for osteomyelitis. Sagittal proton density-weighted, sagittal STIR, and post-gadolinium sagittal T1-weighted with fat suppression images through the 4th toe are provided (Figure 1). What are the findings? What is your diagnosis?
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Pathology of the Popliteus Tendon
An 84-year-old male presents with lateral knee pain and swelling. Coronal (1A), axial (1B, 1D), and sagittal (1C) fat-suppressed proton-density-weighted images of the knee are provided.
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Wrist Ganglion Cysts
A 22 year-old woman first noted a painless lump on the dorsum of her wrist a few months ago. It aches when the wrist is extended and weightbearing, such as when doing a “plank” during yoga. On exam, the mass feels firm and partly mobile. Axial T1-weighted (1a) and fat-suppressed PD-weighted (1b), coronal fat-suppressed PD-weighted (1c), and sagittal T2-weighted (1d) images are shown.
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Nora’s Lesion
A 31-year-old male presents with a history of trauma two years ago and a one year history of an enlarging, mildly painful mass at the left long finger. T1-weighted (1A) and fat-suppressed proton density-weighted (1B) coronal images, a fat-suppressed proton density-weighted axial (1C) image, and an AP radiograph (1D) are provided. What are the findings? What is your diagnosis?
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Displaced Triangular Fibrocartilage Cartilage Complex Tears
A 25-year-old female presents with dorsal ulnar sided wrist pain, four weeks after a fall. Coronal (1A) and axial (1B) fat-suppressed proton density-weighted images and a (1C) T2-weighted sagittal image are provided.
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Pediatric Elbow Dislocation
A 15-year-old boy presents with elbow pain, limited range of motion and ulnar neuropraxia after a recent wrestling injury. An AP radiograph (1a), coronal STIR (1b) and (1c) fat-suppressed T2-and (1d) T1-weighted axial images are provided.
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