Subcutaneous extension of parasagittal atypical meningioma through parietal foramen.

Subcutaneous extension of parasagittal atypical meningioma through parietal foramen.

World Neurosurg. 2019 Feb 08;:

Authors: Nawashiro H, Nawashiro T, Nawashiro A

Abstract
Meningiomas extended to the scalp without any bony changes are rare. A 79-year-old man presented with a large subcutaneous mass in the midline parieto-occipital region and progressive right hemiparesis. The contrast-enhanced millimetric computed tomography scans of the head showed the intracranial parasagittal enhanced mass invading the superior sagittal sinus, and the subcutaneous mass without any bony destructive, osteoblastic or osteolytic changes. Under the operative microscope, no visible communication was found between the intracranial and extracranial mass lesions. Histopathological examination of both intracranial and extracranial tumors demonstrated the same atypical meningioma (WHO grade II). The possible route of extracranial extension of the tumor may be the sizable parietal foramen.

PMID: 30743032 [PubMed - as supplied by publisher]

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