Fig. 1

These figures show the imaging feature of this young male patient. a–f CT and MRI, MRA scans show hematoma of the left occipital lobe, and enlarged vessels connected to the mass. g–k DSA and 3D-DSA manifestations of the “AVM” mass with feeding arteries and draining veins. l The intraoperative view of the darker vessels with enlarged draining veins laying on the surface of the brain surface. m and n The pathological manifestation of the mass on immuno-chemico-histological stains of both HMB45 and S-100 (the brown deposition demonstrated the existence of melanin). o and p The scattered and silent systematic dermatologic lesions of malignant melanoma that were discovered after surgery