“…The commonest neurological disorder is a reversible encephalopathy-namely, hepatic precoma and coma. It is also recognized that there may be permanent damage to the brain (Baltzan, Olszewski, and Zervas, 1957;Gibson, 1963;Victor, Adams, and Cole, 1965;Read et al, 1967). The most comprehensive clinical, biochemical and pathological study has been carried out by Victor et al (1965) who concluded from a series of 27 cases that there was a chronic and largely irreversible syndrome of remarkable neurological and neuropathological constancy associated with acquired liver disease and/or porto-systemic shunts.…”