Hyperechoic and Hypoechoic area after trauma

[Xue Heng]

Hi, Steve.
This was a 49-year-old male patient.
He had direct trauma at medial knee one month ago.
Both hyperechoic and hypoechoic area were observed at the injury site.
I know that the hyperechoic area were swelling fat tissue.
But what are the hypoechoic area? I have no idea.
Looking forward to your reply. Thank you very much.

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[Stephen Bird]

Hi Xue,

I think you are correct in thinking that the hyper echoic area is fat contusion.

I suspect the hypechoic area is a combination of haematoma and fat necrosis in that sub-cut adipose layer following the trauma.

Steve

[Xue Heng]

Thank you for answering my question, Steve!

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