Liver and spleen can be selectively skeletized by means of ultrasonosurgery (10-200 W/cm2, 20-40 kHz). These are technological solutions which have provided major prerequisites for low-risk oncosurgery. The technique (ultrasonic sealing) can as well be used in conjunction with monomeric tissue glues to safely and hermetically seal areas of resection of injuries in parenchymatous organs. It has yielded good clinical results in liver and spleen surgery. Based on stringent indication, ultrasonosurgery can provide benefits to patient and surgeon in both oncosurgery and traumatology of liver and spleen.