“…All previous Indian series, except two [29,32] , describe the predominance of IVC up to 79.2% [7,9,[11][12][13]15,30,39,40,42] or IVC-HV obstruction up to 57.7% [14,24,25,35] ; HV involvement was described in 0%-32% of cases in these series [7,9,[11][12][13][14][15]24,25,30,35,39,40,42] . Of the two distinct previous series, one (total 53 cases) showed similar frequency of HV (35.8%), IVC (33.9%) and combined IVC-HV involvement (30.1%) [29] ; whereas the other series involving only chronic BCS showed predominance of HV (45.9%) followed by combined IVC-HV (29.7%) and IVC involvement (24.3%) [32] . In the western countries, hepatic vein thrombosis remains responsible for majority of BCS cases, IVC obstruction is rarely found.…”