What is the survival rate after esophageal stent?

The survival rate after esophageal stenting can vary significantly depending on the underlying cause and overall prognosis. 

Some key points about survival rates:

- For esophageal cancer - The average survival time after stenting for esophageal cancer is around 3-6 months. 5-year survival is very low, less than 5%. Stenting is usually palliative for advanced esophageal cancer.

- For benign strictures - Survival is usually much better with stenting for benign conditions like peptic strictures or post-radiation fibrosis. Stenting is not intended to be a cure but to improve symptoms. Many patients live for years after stenting for benign issues.

- With concurrent chemoradiation - Some studies have found improved survival of around 10-15 months when stenting is combined with chemoradiation compared to stenting alone for esophageal cancer. 

- With self-expanding metal stents (SEMS) - Some research indicates SEMS may provide a slight survival advantage over plastic stents for malignant dysphagia, with an average survival of around 4-5 months.

- With earlier-stage disease - Longer survival is seen when stenting is used for palliation in earlier-stage esophageal cancer compared to late-stage disease.

- With good functional status - Patients with good performance status at the time of stenting tend to live longer than those with poor status. 

So in summary, survival after esophageal stenting can range from months to years and is highly dependent on the individual's underlying condition, stage of disease, additional treatments, and overall functional status. Regular monitoring by a doctor is important after stent placement.