“…Problems of surgical technique would be considerable, particularly with leftsided lesions, although the splenic vein might be utilized, and low flow rates in the renal vein might render the anastomosis likely to thrombose. Present efforts to predict the results of more conventional surgery by angiotensin assay (Howard, 1964) or response to angiotensin infusion may prove more fruitful, but reno-portal anastomosis warrants further experimental work.…”