RT Journal Article
SR Electronic
T1 Prominent dural enhancement adjacent to nonmeningiomatous malignant lesions on contrast-enhanced MR images.
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 761
OP 764
VO 12
IS 4
A1 G Wilms
A1 M Lammens
A1 G Marchal
A1 P Demaerel
A1 J Verplancke
A1 F Van Calenbergh
A1 J Goffin
A1 C Plets
A1 A L Baert
YR 1991
UL http://www.ajnr.org/content/12/4/761.abstract
AB Prominent dural enhancement was noted in 10 (16%) of 61 superficial malignant intracranial tumors studied with contrast-enhanced MR imaging during a 2-year period. Included were six glioblastomas, three parenchymal metastases, and one case of dural metastasis. Seven patients had surgery. In four, there was extensive leptomeningeal invasion in the center of the lesion. In two of these lesions there was firm attachment of the center of the tumor to the dura, but without dural invasion despite extensive external carotid artery supply to the tumor in one case. In two cases the overlying dura was normal, and there was no leptomeningeal tumoral invasion. In the case of dural metastasis, huge nodular lesions were present along the inner aspect of the dura. In none of the cases did prominent dural enhancement adjacent to the tumor correspond with tumoral invasion or extension to the dura. Prominent dural enhancement on contrast-enhanced MR images appears to be much less frequent in malignant tumor than in meningioma, where it is seen in up to 60% of the cases. We believe this finding is more likely to represent reactive changes of the dura than tumoral invasion.