Presentation
Dorsalgia and left shoulder pain.
Patient Data
Age: 55 years
Gender: Male
From the case:
Unilateral trapezius muscle atrophy
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Info

Non-contrast CT scan of the thorax demonstrates a complete left trapezius muscle absence. This feature is suggestive of muscle atrophy or agenesis.
Case Discussion
The left trapezius muscle is absent suggesting extreme atrophy or agenesis.