MR characteristics of a primary melanoma of the quadrigeminal plate.
D001932:Brain Neoplasms / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008545:Melanoma / Q000175:diagnosis*; D008875:Middle Aged; D003336:Tectum Mesencephali / Q000473:pathology*