Primary melanocytic tumor of the cerebellopontine angle mimicking acoustic schwannoma: Case report

Raghavendra H, Dilip Kumar, Vikrant Kesri, Manas Kumar Panigraghi, Sailaja Reddy M

Pdf Page Numbers :- 106-110

Raghavendra H^1,2,*, Dilip Kumar¹, Vikrant Kesri¹_, Manas Kumar Panigraghi¹ and Sailaja Reddy M³

¹Department of Neurosurgery, Krishna Institute of Medical Sciences, Minister Road, Secunderabad-500003, Telangana, India

²Department of Neurosurgery, ESIC Medical College and Super Speciality Hospital, Hyderabad-500038, Telangana, India

³Department of Pathology, Krishna Institute of Medical Sciences, Minister Road, Secunderabad-500003, Telangana, India

*Corresponding author: Dr. Raghavendra H, Department of Neurosurgery, ESIC Medical College and Super Speciality Hospital, Hyderabad-500038, Telangana, India. Email: harpanahalli.raghavendra@gmail.com

Received 23 March 2017; Revised 25 May 2017; Accepted 9 June 2017; Published 19 June 2017

Citation: Raghavendra H, Kumar D, Kesri V, Panigraghi MK, Sailaja M. Primary melanocytic tumor of the cerebellopontine angle mimicking acoustic schwannoma: Case report. J Med Sci Res. 2017; 5(3):106-110. DOI: http://dx.doi.org/10.17727/JMSR.2017/5-20 

Copyright: © 2017 Raghavendra H et al. Published by KIMS Foundation and Research Center. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Abstract

Intra-cranial melanomas are commonly metastatic, from primary melanoma elsewhere in the body. The primary occurrence of a melanoma in the brain parenchyma is rare. We report a case of 26-year aged woman who presented with headache, hearing loss, mild cerebellar signs. On imaging, a space occupying lesion was found in the right cerebellopontine angle and a preoperative diagnosis of schwannoma/ meningioma was made. She underwent right retro-mastoid sub-occipital craniectomy and excision of a blackish vascular tumour. Histopathological examination revealed a melanocytoma intermediate grade, mib Index 4-5%. Search for dermal, mucous and ocular lesions were negative. She received image guidance adjuvant radiation to the post- operative tumour bed to 50.4 Gy/28 fractions @ 180 cGy tumor. She tolerated the treatment well and is symptom free 12 months after treatment. We report a rare case of primary melanocytic tumour of the cerebellopontine angle.

Keywords: cerebellopontine angle; primary melanoma