How long does a bowel stent last?

The typical lifespan of an intestinal stent depends on the type, location, and reason it was placed, but general durations are:

- Self-expanding metal stents (SEMS):

-- For benign strictures: Usually, 3-6 months before removal is recommended.

-- For malignant strictures: 4-6 months typically, though some may remain over 12 months. 

- Self-expanding plastic stents:

-- 3-6 months typically.  - Balloon-expandable metal stents:

-- These are more permanent options and can potentially remain over 12 months.  Some sources report a median duration of nearly 2 years. Additional factors affecting duration:- Stents in the colon may last longer than those placed in the small intestine. 

 - Stents placed across surgical anastomoses often remain shorter duration. 

- Complications like migration, occlusion, or intestinal tissue ingrowth can shorten stent lifespan. 

 - Stents placed for benign strictures are typically removed after the stricture has healed to reduce long-term complications. 

- Stents for malignant strictures may remain until patient's life expectancy is reached. 

So in general, small bowel stents tend to remain about 3-6 months, while colonic stents may remain over 12 months in some cases.  The reason for placement also guides expected duration.