Covered self-expanding metal stents: a promising therapy for difficult stone disease

We read with great interest the article by Hartery et al1 entitled "Covered self-expanding metal stents for the management of common bile duct stones." This retrospective study evaluated the safety and efficacy of inserting covered self-expanding metal stents (CSEMSs) alongside "difficult" stones in 44 patients at 2 tertiary referral centers. After the work by Cerefice et al2 in 2011, this is the second case series in the literature that has evaluated this modality in treating difficult stones after failed endoscopic extraction.

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