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Problems with the "dural tail" sign

S Gupta1, R K Gupta, D Banerjee

  • 1Department of Radiodiagnosis, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India.

Neuroradiology
|January 1, 1993
PubMed
Summary
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A dural tail sign on MRI, typically indicating meningioma, was observed in a cerebral glioma. This finding challenges the classic association, highlighting potential diagnostic complexities in brain tumor imaging.

Area of Science:

  • Neurology
  • Radiology
  • Oncology

Background:

  • The dural tail sign, characterized by enhancement of the dura mater adjacent to a mass, is widely considered a hallmark of meningiomas on gadolinium-enhanced Magnetic Resonance Imaging (MRI).
  • This imaging finding has historically been interpreted as highly specific for meningioma, aiding in preoperative diagnosis and surgical planning.
  • Accurate differentiation between neoplastic and non-neoplastic dural lesions is crucial for appropriate patient management.

Observation:

  • This report details a case of a cerebral glioma that exhibited a prominent dural tail sign.
  • The glioma was peripherally located, and the adjacent dura mater showed significant enhancement on MRI.
  • The imaging characteristics mimicked those typically associated with meningiomas.

Findings:

Related Experiment Videos

  • The presence of a classical dural tail sign in a cerebral glioma represents an atypical presentation.
  • This case underscores that the dural tail sign is not pathognomonic for meningiomas and can be observed in other intracranial pathologies.
  • Histopathological examination confirmed the diagnosis of glioma, despite the suggestive imaging features of meningioma.

Implications:

  • The findings necessitate a broader differential diagnosis when encountering the dural tail sign in neuroimaging.
  • Radiologists and neurosurgeons should consider alternative diagnoses, including gliomas, even when the dural tail sign is present.
  • This case may prompt further research into the underlying mechanisms causing the dural tail sign in various brain tumors and improve diagnostic accuracy.