Concave pyramids of second sort (CP II) are formed similarly to concave cupolae of second sort (CC II) with a comparable logic of emergence to the regular-faced convex pyramids.They are formed by enclosing the space over a regular polygonal base by the lateral deltahedral wrapper consisting of equilateral triangles meeting in Sweatshirts common ape
Endoscopic submucosal dissection in colorectal neoplasia performed with a waterjet system-assisted knife: higher resection rate than conventional technique
Background/Aims Colorectal endoscopic submucosal dissection (ESD) is burdened by its associated high risk of adverse events and long procedure time.Recently, a waterjet-assisted knife was introduced to simplify Facemask and speed up the procedure.The aim of this study was to evaluate the efficacy and safety of waterjet-assisted ESD (WESD) compared