“…Even though the majority of meningiomas are benign [3], they can be associated with significant morbidity and mortality [4,5], caused by the effects of the tumour, as well as by the adverse effects of treatment [6]. The presence of peritumoral oedema (Figure 1A) and mass effect (Figure 1B) in patients with meningioma is reported to have higher odds of developing complications and poor clinical outcomes [7,8]. Moreover, a higher ratio of oedema to tumour volume is also a significant predictor of mortality [8].…”