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Age / Sex : /
Age / Sex : 55 / male
Chief complaint : Left shoulder pain
1) What is your impression? * Two weeks later, you can see the final diagnosis with a brief discussion of this case.
** Send Application Answers to Ja-Young Choi, MD ([email protected])
Courtesy : Sung Hye Koh, MD, Department of Radiology, Hallym University Sacred Heart Hospital.
Diagnosis: Os acromiale with RCT
Discussion
Findings:
Shoulder axillar view; Unfused ossification center of distal end of acromion
MRI ; 1. Os acromiale on T1-weighted axial scan and T2-weighted image sagittal scan
2. Rotator cuff tear and retraction with fluid collection in subacromial-subdeltoid bursa on T2-weighted coronal and sagittal scan
Discussion:
A persistent ossification center at the free end of the acromion occurs in as many as 15% of persons. Pain and higher prevalence of the shoulder impingement syndrome and tears of the rotator cuff have been associated with an os acromiale. Its appearance simulates that of a fracture of the acromion
References:
Resinck. Bone and joint imaging, 2nd edi. W.B. Saunders. Philladelphia. 1996. 1169
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