Fig. 2

Illustrative Case. Preoperative MRI of patient Nr. 18, showing a parietooccipital left sided intra-axial lesion with infiltration of the splenium of the corpus callosum. The lesion is centrally necrotic with dense contrast enhancement around the margins. The measured tumor volume is 36.5 mm³ and edema volume 231.4mm³ with 15 mm midline shift and consecutive hydrocephalus. Clinically the patient initially presented with a Gerstmann syndrome and neurocognitive deficits. The preoperative ICP was measured 9.08 mmHg on the left side and 11 mmHg on the right side. A performed biopsy diagnosed a B-cell type non-hodgkin lymphoma