Neurocutaneous melanosis with an intracranial cystic-solid meningeal melanoma in an adult: A case report and review of literature

Figure 2 Immunohistochemistry and direct observation of the tumor. A: Ki-67 (+30%); B: Vimentin (+); C: S-100 (+); D: HMB45 (+); E: × 200, HE; F: The tumor appeared blackish brown, had no boundary or capsule, and was soft; the peripheral leptomeninges were also stained black.