Dr. Derek Stensby discusses an interesting muscle abnormality that is well characterized with MRI.
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.
Myxoid Soft-Tissue Neoplasms
A 57-year-old female patient presents for MR imaging with a history of mass at the lateral aspect of her shoulder for 1.5 years, evaluate for lipoma.
Elastofibroma Dorsi
A 79 year-old female noticed a painless mass along the inferior scapula, present for several months. Axial T1-weighted (1a), coronal T2-weighted (1b), sagittal T1-weighted (1c), and fat-suppressed sagittal T2-weighted (1d) images are provided.
Common Peroneal Nerve Abnormalities
A 17-year-old male presents with foot drop 4 months following surgery for an ACL tear and a posterolateral corner injury. Axial fat-suppressed proton density-weighted (1a), axial fat-suppressed T2-weighted (1b,c) and coronal fat-suppressed T2-weighted (1d) images are provided.
Common Intraosseous Cysts
A 61 year-old male presents with posterior left shoulder pain and limited range of motion for six months. No known injury. An axial fat-suppressed proton density image at the level of the lower glenoid is provided. What are the findings? What is your diagnosis?
Lipoma and Liposarcoma
Clinical History: A 65 year-old male presents with right flank pain and sensation of a mass. (1a,1b) T1-weighted sagittal and coronal images and a (1c) STIR coronal image are provided. What are the findings? What is your diagnosis? Findings [figure...
Intraarticular Osteoid Osteoma
Clinical History: A 29 year-old female complains of progressive knee pain and stiffness without a history of trauma. A radiograph (not shown) demonstrated no abnormality. T1-weighted (1a) and proton density fat suppressed (1b) sagittal images of the knee are provided....
Gout
Clinical History: A 55 year-old male complains of chronic swelling and pain in the foot with inability to walk on concrete and waking at night, without relief from medication. Axial long axis T1-weighted (1a) and coronal short axis fat suppressed T2-weighted (1b)...
Schwannoma of the Median Nerve
Clinical History: An 80 year-old male presents with a one year history of a left forearm mass and left hand numbness. Axial T1-weighted (1a) and coronal STIR (1b) images of the forearm are presented. What are the findings? What is your diagnosis? ...
Morel-Lavallee Lesions
Clinical History: A 39 year-old male patient complains of right thigh/pelvic pain and swelling, after being dragged along rocks while parasailing. (1a) Axial T1, (1b) coronal T1, (1c) axial STIR, and (1d) coronal STIR-weighted MRI images are provided. What are the...
Intraosseous Lipoma
Clinical History: A 16 year old male complains of intermittent right heel pain for 7 years, with a recent increase after sports activities. Plain radiographs suggest a "bone cyst". (1a,1b) Sagittal and axial T1-weighted and (1c,1d) STIR images were obtained. What are...
Venous Malformations
Clinical History: A 28 year-old female presents with calf swelling and pain. Sagittal (1a) T2-weighted and (1b) proton density-weighted images are provided. What are the findings? What is your diagnosis? Findings Diagnosis Venous...
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