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Utilizing radio frequency energy and the heated catheter, the physician cauterizes â or burns â the tissue surrounding your saphenous vein to close it. Balloon angioplasty/stents for renal vascular hypertension is a procedure to open narrowed arteries that carry blood to your kidneys. It involves inserting a long, thin tube called a catheter through into the narrowed part of the artery.
These procedures include surgery to repair a perforation (hole) in the esophagus and dilation, or dilatation, to reduce stricture (narrowing). Dilation involves inserting a guidewire into the constricted area of the esophagus and passing a device called a dilator over the wire to widen the esophageal opening.