An interesting and distinctive group were the cases where histology showed portal fibrosis without definite cirrhosis. The majority of the cases were treated by portacaval shunt of the end-to-end variety.The overall mortality, including short-and longterm mortality, was 27 per cent Of the portacaval group, the total mortality was 29 per cent. The incidence of post-shunt neuropathy syndrome was 23.6 per cent. Postoperative haemorrhagic complications were most marked in the splenorenal and splenectomy groups and were very low in the portacaval shunt group. The cases were followed up over many years. It was seen that in the portacaval shunt group, a large majority of the deaths occurred in the first year. This was not so in the other groups. Haemodynamic studies following portacaval shunt showed that the wedged hepatic venous pressure was reduced by about 6 mm. Hg and the hepatic blood-flow by about 30 per cent. Lowering of the blood-flow by 50 per cent or more was associated with marked neuropathic symptoms.A c k n o w l e d g e m e n t s . -W e are grateful to