“…4 Computerised tomography scan (case 4) showing multiple cavities in both cerebral hemispheres containing material of fluid density. Gowan, 1942;Winkelman and Moore, 1942;Marburg and Casamajor, 1944;Lumsden, 1950;Negrin et al, 1952;Cohen and Kristiansen, 1954;Kramer, 1956;Crome, 1958;Lindenberger and Swanson, 1967;Aicardi et al, 1972;Schultz and Leeds, 1973) exclusive of the herpes associated cases. In five instances the fluid is described as 'normal", without further detail.…”