Fig. 1

Radiological features. A voluminous tumour in the left temporal pole, extending superiorly to fronto-basal and fronto-lateral regions, deeply to the insula and posteriorly till the supramarginal gyrus was discovered (a, b). The tumour was initially interpreted as atypical meningioma with peripheral intratumoral degenerative cysts. The tumour was completely resected with no signs of residue; brain tissue’s compression resolved (c, d). A two months post-surgery MRI control demonstrated a huge left fronto-temporal local tumoral recurrence (e, f). Three months MRI control after a second intervention showed only a small local recurrence on the posterior margin of the surgical cavity but a diffuse leptomeningeal tumoral spread on the inferior surface of cerebellum, around the brainstem and around the spinal cord (g, h)