Effects of Palliative Esophageal External Beam Radiation Therapy in Patients with Stent for Esophageal Cancer: A Retrospective Cohort Study.

PURPOSE

Self-expandable metallic stents (SEMS) provide immediate but nondurable dysphagia relief in esophageal cancer, while external beam radiotherapy (EBRT) provides slower, more durable dysphagia relief. While the combination of SEMS with EBRT would seem to offer both rapid and durable dysphagia relief in the palliative setting, there remains controversy on its safety and efficacy. We investigated patient outcomes regarding EBRT after SEMS placement in patients with incurable esophageal cancer at a regional Canadian cancer program.

METHODS

We conducted a single-centre retrospective chart review from January 2010 to July 2020 to compare stent-related complications and survival in patients with incurable esophageal cancer treated with SEMS alone or SEMS + EBRT at Kelowna General Hospital.

RESULTS

66 patients were included in the SEMS alone group and 26 in the SEMS + EBRT group. Patients treated with SEMS alone showed an average of 3.05 fewer stent-related complications compared to patients who received SEMS + EBRT. The SEMS alone group also had 9.05 greater odds of experiencing higher grade complications compared to the SEMS + EBRT group (p < 0.001). Patients in the SEMS + EBRT group survived significantly longer than those treated with SEMS alone, with a median overall survival of 163.5 days and 65 days, respectively.

CONCLUSIONS

SEMS monotherapy was associated with significantly fewer, yet higher grade stent-related complications compared to palliative EBRT after SEMS placement. SEMS + EBRT treatment was associated with significantly prolonged survival compared to SEMS alone. Prospective studies are needed to confirm these findings.