DELAYED SPONTANEOUS OPENING OF A SELF-EXPANDING METAL STENT BRIDGING A MALIGNANT ESOPHAGEAL STENOSIS

We report on a case of an 85-year-old man with dysphagia who suffered from a stenosing esophageal adenocarcinoma that could not be treated by surgery. The tumor demonstrated circumferential growth and extended from 14 to 22 cm from the incisors. There were no esophago-tracheal fistulas. The stenosis could be negotiated with the endoscope. Under fluoroscopic guidance, a self-expanding Strecker stent was placed in the stenosed area with no prior dilatation. After releasing the stent an x-ray revealed a twisted and wrinkled stent which had expanded to only half of its maximum diameter. The patient's symptoms had not improved. Four days later dysphagia resolved when the stent spontaneously corrected its position and was found to be maximally expanded. On the basis of this observation it may be concluded that, at least in some cases, self-correction of an initially unsatisfactory positioning of a Strecker stent may be expected, even after four days.