Muscle Herniation

Dr. Derek Stensby discusses an interesting muscle abnormality that is well characterized with MRI.

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.

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?

Knee Bursae

A 73 year-old male complains of a gradually enlarging “knot” on the anterior knee for 8 years. He previously worked laying tile. Sagittal T1-weighted (1A), sagittal fat-suppressed proton density-weighted (1B), and axial fat-suppressed proton density-weighted (1C) images are shown.

The Postoperative Meniscus

An 18 year-old male with a history of a posterior horn medial meniscus peripheral longitudinal tear treated with meniscal repair at age 16 presents for MR imaging.  The patient had a recent new injury with increased pain. 

Subchondral Fractures

A 59 year-old female with no history of prior surgery presents with medial knee pain for 1 month. (1a,c) Coronal and (1b) sagittal fat suppressed proton density weighted MR images are submitted for review.

Myositis Ossificans

An 18 year-old basketball player presents with anterior thigh pain and swelling 4 weeks after being struck in the thigh during a game. (1A) T1-weighted coronal, (1B) fat-suppressed proton density-weighted axial, (1C) fat-suppressed T2-weighted coronal, (1D) post-contrast fat-suppressed T1-weighted axial MR images, and (1E) a lateral radiograph of the thigh are provided.

Salter-Harris Fractures

In this month’s Radsource MRI Web Clinic, Dr. Martha Norris reviews a group of childhood osseous injuries in which the risk of growth disturbance can be assessed with MRI.

Compartment Syndrome of the Leg

A 32 year-old male presents with right lateral leg pain and swelling. Symptoms began while running a half marathon two weeks ago. (1A) Axial T1-weighted and (1B,C) fat suppressed T2-weighted images are provided.

Atypical Femur Fractures

A 62 year-old female with a history of arthritis has had vague left thigh pain for several months. An MRI was performed to evaluate the musculature and femur.

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