Fig. 4

Restricted diffusion in supratentorial grey matter—scattered lesions (Pattern 2A). Case 1: 4-year-old child with somnolence and hyperaesthesia, in the setting of acute lymphoblastic leukaemia (ALL) and Scedosporium prolificans fungaemia. DWI (a, b) demonstrated scattered foci of restricted diffusion, mainly affecting cortical grey matter with a bilateral though asymmetric distribution. Case 2: 4-month-old infant with respiratory distress, in the setting of HIV, Pneumocystis jiroveci pneumonia and an abnormal cranial ultrasound. DWI (c, d) demonstrated scattered foci of restricted diffusion, mainly affecting cortical grey matter with a bilateral though asymmetric distribution