Target sign (neurofibromas)

The target sign of neurofibromas is seen on MRI and represents a T2 hyperintense rim surrounding a central area of low signal. It is believed to be due to a dense central area of collagenous stroma.

Although this sign is highly suggestive of a neurofibroma, it is occasionally also seen in schwannomas and malignant peripheral nerve sheath tumours 1-2.


Inspired signs
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Article Information

rID: 28498
Synonyms or Alternate Spellings:
  • Target sign of neurofibromata
  • Target sign of a neurofibroma
  • Target sign of neurofibromas

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Cases and Figures

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    Case 1
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    Case 2: peripheral nerve sheath tumour of the sciatic nerve
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