Intracranial meningeal melanocytoma: CT and MRI

C. J. Chen, Y. I. Hsu, Y. S. Ho, Y. H. Hsu, L. J. Wang, Y. C. Wong

研究成果: 雜誌貢獻文章同行評審

53 引文 斯高帕斯(Scopus)

摘要

We report the MRI and CT findings of an intracranial meningeal melanocytoma (IMM) arising from Meckel's cave and review the imaging characteristics of IMM. On CT, IMM constantly appear as well-circumscribed, isodense to slightly dense, extra-axial tumours with homogeneous contrast enhancement. This appearance is nonspecific and similar to that of meningiomas or small neuromas. On MRI, the signal of IMM is strongly related to the amount of melanin pigment: the more melanin, the more shortening of T1 and T2 relaxation times. Only when it shows as a homogeneous mass, bright on T1 and dark on T2 weighting, can a specific diagnosis of a melanin-containing tumour be made. However, this still cannot provide a distinction between IMM and malignant meningeal melanoma.

原文英語
頁(從 - 到)811-814
頁數4
期刊Neuroradiology
39
發行號11
DOIs
出版狀態已發佈 - 1997
對外發佈

ASJC Scopus subject areas

  • 放射學、核子醫學和影像學
  • 神經病學(臨床)
  • 放射與超音波技術

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