Late results of treatment of deep vein thrombosis.

Twenty-two patients who had an acute episode of thrombosis in the deep veins of the legs were studied by a new technique of ascending functional cinephlebography 6 to 12 months after the episode of thrombosis.If the condition was diagnosed within 36 hours and the thrombus was dissolved rapidly valve function was preserved. When diagnosis was delayed there was a very great risk of permanent damage to the valves.