Claw sign (mass)

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:

Inspired signs

Article information

rID: 14016
Section: Signs
Tag: refs, refs, refs
Synonyms or Alternate Spellings:
  • Claw-sign

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Cases and figures

  • Figure 1: claw sign
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  • Case 1: Wilms tumor
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  • Case 2: Wilms tumor
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  • Case 3: Wilms tumor
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  • Case 4: Wilms tumor
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  • Case 5: Wilms tumor
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  • Case 6: Wilms tumor
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  • Case 7: Rathke's cleft cyst
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