Part 1 Part 2 Part 3 Part 4 Part 5 Part 6 Part7 Investigations B multifocal cortical breach with a discharging sinus no obvious effusion Coronal section Axial section, showing a draining sinusPart 2 Part 1 5 Part 3 Part 4 Part 5 Part 6 Part 7 Inves0ga0ons Coronal section Axial section, showing a draining sinus Ø mul0focal cor0cal breach, with a discharging sinus, no obvious effusion