J Neurol Surg A Cent Eur Neurosurg 2018; 79(02): 177-180
DOI: 10.1055/s-0037-1608873
Case Report
Georg Thieme Verlag KG Stuttgart · New York

Cerebellopontine Angle Schwannoma and Meningioma in Contiguity: Surgical Implications in Neurofibromatosis

Lokesh Nehete
1  Department of Neurosurgery, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bangalore, Karnataka, India
,
B.N. Nandeesh
2  Department of Neuropathology, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bangalore, Karnataka, India
,
Rose Dawn Bharath
3  Department of Neuroimaging and Interventional Radiology (NIIR), National Institute of Mental Health and Neuro Sciences (NIMHANS), Bangalore, Karnataka, India
,
Malla Bhaskara Rao
1  Department of Neurosurgery, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bangalore, Karnataka, India
,
Arivazhagan Arimappamagan
1  Department of Neurosurgery, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bangalore, Karnataka, India
› Author Affiliations
Further Information

Publication History

15 May 2017

08 September 2017

Publication Date:
14 December 2017 (online)

Abstract

Concurrent occurrence of brain tumors in the same location is very unusual and has been noted in patients with neurofibromatosis. Two lesions, occurring in close contact but of different histology, are called contiguous tumors. Schwannoma and meningioma are the two common histologies reported to present as contiguous tumor. We present two patients with contiguous tumors in the cerebellopontine angle. The magnetic resonance imaging characteristics in both cases demonstrate important findings that should be identified to raise the possibility of contiguous tumors. We discuss the surgical implications in identifying the facial nerve in this complex tumor morphology and steps we took to preserve function. Variable displacement of the facial nerve in the presence of multiple tumors needs to be kept in mind during surgical management and can be significantly aided by intraoperative monitoring.