[Factors determining the patency of experimental anastomoses between lymphatic vessels and veins]

End-to-end anastomoses between lymph vessels and veins performed under microscopy (magnification lox--20 x) may be useful in the treatment of certain types of lymphoedema. End-to-end anastomosis of the vena profunda femoris and a deeply localized lymph vessel have been performed on the hind-legs of 10 dogs. Scanning electron microscopic investigation of the anastomosis has been carried out at 0h, 48h and 8 days respectively after the operation. Scanning electron micrographs of the inner surface of the anastomosis indicate that blood flow though the anastomosis can be achieved by atraumatic surgical technique (by the use of thin) 10/0) sewing material and needle. Injury to the endothelial surface results in platelet and erythrocyte aggregation. 8 days after the operation the inner surface of the anastomosis is covered by cells (endothelium?). Early development of a new inner cell layer can prevent occlusion of the shunt.