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There is a linear echogenic focus in the region of swelling causing reverberation artifact. It is a foreign body.
Location
- subcutaneous plane
- superficial to 3rd - 4th finger extensors, at the metacarpals base level
- aligned to the long axis of metacarpals
Size
- length: 7-8 mm
- width: 2-3 mm
There is no tendon tear/tenosynovitis.