Which type of stent is more prone to tumor ingrowth: coated or non-coated?

Non-coated stents are more prone to tumor ingrowth due to their design and material properties. Coated stents typically have a surface treatment or a layer that can prevent tissue adherence and reduce the likelihood of tumor cells infiltrating the stent. These coatings help to create a barrier that minimizes the interaction between the stent and surrounding tissues, which is beneficial in preventing occlusion caused by tumor growth.

In contrast, non-coated stents lack this protective layer, allowing tumor cells greater access to the surface of the stent. As a result, these stents are more vulnerable to the process of tumor ingrowth, leading to a higher risk of blockage and complications. This differentiation in design and functionality is critical for patient outcomes, especially in the management of malignant obstructions where tumor growth is an ongoing concern. Thus, the understanding of stent types and their propensities for complications is essential in endoscopic surgical practices.