Self-expandable metallic stent is a medical device used to keep arteries or bile ducts open in case of blockages. Synonyms for self-expandable metallic stent include expandable metal stent, metal stent, and vascular stent. Other synonyms may include intraluminal device, endoluminal stent, and implantable stent. These stents are designed to be flexible and easily inserted into the patient's body with minimal invasion. They are often made of materials such as stainless steel or nitinol. Depending on the location of the implanted device, the self-expandable metallic stent can be used to treat various conditions, including esophageal strictures, bronchial obstruction, and peripheral artery disease.