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Dynamic Phlebography of the Lower Extremities With Special Reference To Our New Approach To the Classification of Findings

* Department of Surgery, Keio University School of Medicine, Tokyo, Japan. The essential points of this report were presented at August 1, 1967, at the Eighth Annual Meeting of the Japanese College of Angiology. The anatomy and physiology of the veins of the lower extremities are very complicated. They can be structurally divided into three systems, and the functions of each system differ individually. In addition, the blood stream in the leg veins is not always constant and is variously altered with postural changes or muscular movements. When some disorder involves the venous