Table 1 Distribution of "worst" CT scan findings assigned by Marshall score (N = 111).

1 No visible intracranial pathology

14 (13)

2 Cisterns present with midline shift 0-5 mm; no high or mixed density lesion > 25 ml.

36 (32)

3 Cisterns compressed or absent with midline shift 0-5 mm.

43 (39)

4 Midline shift > 5 mm;or surgically evacuated lesion;and non-evacuated high or mixed density lesion >25 ml

18 (16)