Radiologic Signs
The Largest Illustrated Collection of Imaging Signs on the Web

 

S

Y Index

Yin Yang Sign-swirling blood flow in a  pseudoaneurysm on US or partly thrombosed aneurysm on contrast CT, resembling ancient Chinese symbol
Y Sign-characteristic shape of thecal sac compression in lumbar epidural lipomatosis producing a stellate shape like a "Y"

 

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