Summary
Recurrent meningiomas are due usually to incomplete removal as in the case of basal meningiomas where the tumour surrounding vessels and nervous structures cannot be completely excised. Recurrent meningiomas of the convexity are rare after resection. In most recurrent cases histological changes are noted which may explain the rapid growth, the aggressive nature and also the malignancy of the tumour. These changes include increased mitotic activity, necrosis and invasion of the adjacent brain parenchyma. CT findings in malignant meningiomas are related to the microscopic appearance of these tumours: tumoral necrosis determines heterogeneous enhancement; brain invasion explains the irregular outline of the tumour and sometimes the absence of surrounding low attenuation area. The authors report 5 malignant meningiomas in which the CT findings are correlated with the microscopic findings.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Burger PC, Vogel FS (1976) Surgical pathology of the nervous system and its coverings. Wiley and Sons, New York
Crompton MR, Gautier-Smith PC (1970) The prediction of recurrence in meningiomas. J Neurol Neurosurg Psychiatry 33: 80–87
Henry JM, Schwartz FT, Sartawi MA, Fox JL (1974) Cystic meningiomas simulating astrocytomas. Report of three cases. J Neurosurg 40:647–650
Kazner W, Wende S, Grumme T, Lanksch W, Stochdorph O (1981) Computertomographie intrakranieller Tumoren aus klinischer Sicht. Springer, Berlin Heidelberg New-York
Lee KF, Lin SR, Whiteley WH, Tsai FY, Thompson NL, Suh JH (1976) Angiographic findings in recurrent meningioma. Radiology 119:131–139
Russell EJ, George AE, Kricheff II, Budzilovich G (1980) Atypical computed tomographic features of intracranial meningioma. Radiology 135:673–682
Schäfer ER (1965) Rezidvhäufigkeit bei Meningeomen. Verlaufsbeobachtungen über 20 Jahre. Acta Neurochir 13: 186–195
Sigel RM, Messina AV (1976) CT: the anatomical basis of the diminished density surrounding meningiomas. AJR 127:139–144
Simpson D (1957) The recurrence of intracranial meningiomas after surgical treatment. J Neurol Neurosurg Psychiatry 20: 22–39
Smith HP, Cahha VR, Moody DM, Kelly DL Jr (1981) Biological features of meningiomas that determine the production of cerebral edema. Neurosurgery 8:428–433
Tytus JS, Lasersohn JT, Reifel E (1967) The problem of malignancy in meningiomas. J Neurosurg 27:551–557
Vassilouthis J, Ambrose J (1979) CT scanning appearances of intracranial meningiomas. An attempt to predict the histological features. J Neurosurg 50:320–327
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Dietemann, J.L., Heldt, N., Burguet, J.L. et al. CT findings in malignant meningiomas. Neuroradiology 23, 207–209 (1982). https://doi.org/10.1007/BF00342542
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00342542