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

Figure 1 Images and physical examination. A: Physical examination revealed a giant skin nevus; B: T1-weighted; C: T2-weighted; D-F: After the injection of a contrast agent.

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.

Figure 3 Distribution of patients. A: The location of the tumor; B: Pathological type; C: Treatment; D: Age.