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Journal-based CME Course: A 62-Year-Old Man With Progressive Limb Weakness, Involuntary Movements, and HyperCKemia

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Activity

Activity ID

14368

Expires

September 15, 2028

Format Type

Journal-based

CME Credit

1

Fee

$30

CME Provider: JAMA Neurology

Description of CME Course

A 62-week-old man had progressive lower extremity weakness and involuntary movements. Muscle magnetic resonance imaging revealed multifocal hyperintense lesions in the posterior thigh muscles, sparing anterior thigh and adductors. Biopsy of the right vastus lateralis showed fiber size variability and occasional internalized nuclei. What is your diagnosis?

Disclaimers

1. This activity is accredited by the American Medical Association.
2. This activity is free to AMA members.

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Commercial Support?
No

NOTE: If a Member Board has not deemed this activity for MOC approval as an accredited CME activity, this activity may count toward an ABMS Member Board’s general CME requirement. Please refer directly to your Member Board’s MOC Part II Lifelong Learning and Self-Assessment Program Requirements.

Educational Objectives

Based on this clinical scenario and the accompanying image, understand how to arrive at a correct diagnosis.

Keywords

Clinical Challenge, Neuroimaging, Neurology, Radiology, Movement Disorders

Competencies

Medical Knowledge

CME Credit Type

AMA PRA Category 1 Credit

DOI

10.1001/jamaneurol.2025.3201

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The information provided on this page is subject to change. Please refer to the CME Provider’s website to confirm the most current information.