Abstract：
BACKGROUND:Neoplasms located in the Meckel cave account for 0.2%-0.5% of all intracranial tumors. This area is the site of many types of pathologic lesions, most often trigeminal nerve schwannomas and meningiomas. Melanin-containing tumors are rare in this area. These tumor types can be suspected if the magnetic resonance characteristics of a tumor has some differences in comparison with other types of central nervous system neoplasms. In fact, differential diagnosis of melanotic tumors is based mainly on the histopathologic criteria and immunohistochemical profile. This article presents a case report of melanotic schwannoma of the Meckel cave and a literature review of the problem. CASE DESCRIPTION:A 23-year-old man underwent a 2-stage surgery for a dumbbell pigmented mass lesion located in the Meckel cave. No signs of recurrence were seen on follow-up magnetic resonance imaging (MRI) 3.5 years after the operation. CONCLUSIONS:Melanin-containing tumor can be suspected in the presence of radiologic characteristics, such as a hyperintense MRI signal on T1-weighted images and a hypointense signal on T2-weighted images. If a black extracerebral tumor is detected, the main course of surgical treatment is maximal excision despite it possibly being a malignant melanoma and the temptation to perform partial resection because of an unfavorable prognosis. Chemotherapy can be justified in the presence of an aggressive melanotic schwannoma.
journal_name
World Neurosurgjournal_title
World neurosurgeryauthors
Moisak GI,Matsko DE,Chernov SV,Dmitriev AB,Amelin ME,Zhelbunova EA,Chernov MF,Rzaev JAdoi
10.1016/j.wneu.2018.04.153subject
Has Abstractpub_date
2018-08-01 00:00:00pages
337-342eissn
1878-8750issn
1878-8769pii
S1878-8750(18)30873-8journal_volume
116pub_type
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