RESUMO
OBJECTIVE: The palliation of dysphagia caused by esophageal carcinoma and other inoperable tumours obstructing the esophagus presents a challenge for the thoracic surgeon, in particularly when associated with fistula (F). In a prospective study over the last 5 years, we have evaluated the effectiveness of different approaches and types of prostheses to solve the above problem. METHOD: Thirty three patients (mean age: 63.5 years, range 42-76, M/F:24/9) with inoperable tumours obstructing the esophagus underwent intubation and/or palliative surgery according to the following protocol: (1) Preoperative esophagography; (2) endoscopy and biopsy; (3) dilatation and insertion of prosthesis usually under general anaesthesia; and (4) re-evaluation the following day, in 30 days and as required thereafter. Prosthesis used were: Atkinson 3, Wilson-Cook (plain) 12, Wilson-Cook (cuffed) 4, Strecker (metallic self-expandable) 13. The patients were divided in three groups according to the extension of the disease: group A (n = 19) plain malignant strictures, group B (n = 5) strictures with respiratory Fs, group C (n = 9) strictures with mediastinal or pleural Fs. RESULTS: All patients of group A had successful palliation irrespectively of prosthesis used and site of obstruction. One patient required two stents. There was no death and 50% survival at 6 months was 70%. In group B, a cuffed prosthesis successfully closed two bronchoesophageal Fs, while three patients underwent retrosternal bypass surgery. There was one death on the 26th postoperative day. In group C, one Strecker, two plain Wilson-Cook and two cuffed Wilson-Cook stents, although initially succeeded, in due course, failed to block the Fs in five patients who subsequently underwent bypass surgery with one death. With four patients both leak and dysphagia were significantly improved with the use of self-expandable stents therefore, not requiring surgery. Overall, there were two deaths but no failure in palliating dysphagia. Longer survival was 20 months. Patients with fistulae had poorer prognosis as compared to those suffering from plain malignant stricture (P = 0.01). CONCLUSIONS: Plain malignant inoperable oesophageal strictures can be successfully palliated with intubation. Complicated with fistula strictures, however, are difficult to manage and have a poor prognosis. Due to the fact that bypass surgery is associated with an increased mortality, it should be kept for those with late stent failures and fistula recurrences.
