Claw sign (mass)
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At the time the article was created Frank Gaillard had no recorded disclosures.View Frank Gaillard's current disclosures
At the time the article was last revised Mohammad Taghi Niknejad had no financial relationships to ineligible companies to disclose.View Mohammad Taghi Niknejad's current disclosures
The claw sign is useful in determining that a mass arises from a solid structure rather than is located adjacent to it and distorts the outline.
It refers to the sharp angles on either side of the mass, which the surrounding normal parenchyma forms when the mass has arisen from the parenchyma. As such, normal parenchyma extends some way around the mass.
Examples where a claw sign is useful include: