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Pigmented Villonodular Synovitis
A 21 year-old female complains of pain, swelling, and stiffness in the knee anteriorly, status post MVA 4 months ago. (1A,1B,1C) Sagittal STIR, T1-weighted, and gradient echo sequences are provided.
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Congenital and Acquired Hypertrophic Peripheral Neuropathies
A 55-year-old female presents with constant lower back pain and extremity numbness. Sagittal and parasagittal T2-weighted images (1a-b) of the lumbar spine and axial T2-weighted images at the L4-5 (1c) and S1 levels (1d) are provided.
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Facet Synovitis
A 69-year-old female presents with low back pain, bilateral buttock, and posterior right thigh pain, aggravated when moving from seated to standing position. The patient denies radicular type symptoms. On exam, the patient demonstrates increased pain with hyperextension and lateral movements in hyperextension. There is point tenderness over the paraspinal lower lumbar levels greater on the left. Sagittal STIR (1a and 1b) and axial T2-weighted (1c) and T1-weighted (1d) images are provided.
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Serous Atrophy
A 22-year-old female runner presents with worsening right foot pain with running and prolonged weight-bearing. Sagittal T1-weighted (1a) and STIR (1b), axial T1-weighted (1c) and fat-suppressed T2-weighted (1d), as well as coronal T2 Dixon Fat (1e) and T2 Dixon Water (1f) images are provided. What are the findings? What is your diagnosis?
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Myxopapillary Ependymoma
A 35-year-old woman presents with low back and right leg pain that began during pregnancy four years previously. Sagittal T1- and T2-weighted (1a and 1b), T1-weighted post-gadolinium (1c), axial T2-weighted (1d) and T1-weighted post-gadolinium axial images (1e) are provided.
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Tissue Delamination
A 66 year-old man presents with persistent right shoulder pain, accompanied by painful clicking. (1A,B) T2-weighted fat-suppressed coronal MR images of the right shoulder are provided. What are the findings? What is your diagnosis?
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Vaccine-related Shoulder Injury
A 64-year-old male complains of shoulder pain and limited range of motion for six weeks after an influenza vaccination. Fat-suppressed T2-weighted coronal (1A) and proton density-weighted axial (1B) images of the left shoulder are provided.
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Proximal Tibiofibular Joint Instability
A 21-year-old male with lateral knee pain radiating into the calf status-post soccer injury. Rule out lateral meniscus tear. Sequential axial (1A), coronal (1B), and sagittal (1C) fat-suppressed proton density-weighted images are provided through the proximal tibiofibular joint.
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Off-track Shoulder Lesions
A 36 year-old female with a history of shoulder instability and prior surgery presents after suffering a recurrent dislocation. (1A) T1-weighted coronal, and (1B,C) fat-suppressed proton density-weighted axial and sagittal images are provided.
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Developmental Dysplasia of the Hip
Clinical History: A 30 year-old female presents with chronic hip pain to evaluate for femoroacetabular impingement. Coronal (1A) and axial oblique (1B) fat-suppressed proton density-weighted images are provided. What are the findings? What is your diagnosis? Findings Diagnosis Borderline…
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Bucket-handle Tear of the Meniscus
A 25 year-old male presents with medial knee pain after recent injury. Three contiguous sagittal fat-suppressed proton density-weighted images are provided. What are the findings? What MRI sign is demonstrated? What is your diagnosis?
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Dural Ectasia
An 18 year-old male undergoes MRI for low back pain. Sagittal T2-weighted (1a), sagittal T1-weighted (1b), and axial T1-weighted (1c) and axial T2-weighted (1d) images at the level of S1 are provided.
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