Article

Intracranial meningeal melanocytoma.

Department of Neurosurgery, Mazda Hospital, Hiroshima, Japan.
Neurologia medico-chirurgica (impact factor: 0.61). 12/2002; 42(11):504-9. pp.504-9
Source: PubMed

ABSTRACT A 59-year-old man presented with a rare intracranial meningeal melanocytoma in the left cerebellopontine angle. The patient underwent partial surgical excision and radiosurgery for successful control of the tumor. Meningeal melanocytoma is an essentially benign melanotic tumor, derived from the melanocytes of the leptomeninges, and may occur anywhere in the cranial and spinal meninges. Preoperative differential diagnosis of intracranial meningeal melanocytoma from malignant melanoma is difficult based on magnetic resonance imaging. Ultrastructural findings are essential to establish the diagnosis. The prognosis of this tumor is not always favorable with occasional local recurrence. Total resection is the best treatment, but gamma knife radiosurgery is effective for the residual tumor following partial resection.

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Keywords

benign melanotic tumor
 
gamma knife radiosurgery
 
intracranial meningeal melanocytoma
 
left cerebellopontine angle
 
magnetic resonance imaging
 
malignant melanoma
 
Meningeal melanocytoma
 
occasional local recurrence
 
partial surgical excision
 
Preoperative differential diagnosis
 
rare intracranial meningeal melanocytoma
 
residual tumor
 
successful control
 
tumor
 
Ultrastructural findings