[Veno-venous crossover bypass according to Palma: our experience]

Four cases of Palma's operation (veno-venous cross-over bypass) performed from 1986 through 1992 for occlusive venous disease are reported together with an extensive follow-up. After a synthetic review of the literature, the authors conclude that this operation should no more be considered an experimental procedure, even if a definite statement of its long-term usefulness (and therefore of the indication) is still lacking.