The following right elbow x-ray is from a 60 year old man with pain and swelling behind the elbow. What can be observed?

 

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The elbow x-ray shows a rounded soft tissue mass posterior to the olecranon containing a cloud-like calcification. This is a classic finding of gouty olecranon bursitis.

The cloud like calcification represents monosodium urate deposits of different sizes.

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