Removal of the Evolution® Esophageal Stent - Fully Covered

Inclusion Criteria: * Patient is diagnosed with benign or malignant stricture, fistula, perforation, or leak * Physician plans to remove the stent within the duration of study follow-up Exclusion Criteria: * Patient is \< 18 years of age * Patient is unable or unwilling to provide written informed consent or comply with follow-up schedule * Patient is pregnant, lactating, or planning on being pregnant within the next 6 months * Patient is simultaneously participating in another investigational drug or device study * Patient that is contraindicated to upper GI endoscopy and/or any procedure to be performed in conjunction with esophageal stent placement * Patient has a known hypersensitivity or contraindication to study products that, in the opinion of the investigator, cannot be adequately pre-medicated