A vascular stent, comprising: a proximal section having a first cross-sectional dimension and being configured to anchor in an afferent vessel of a bifurcation proximate to an aneurysm, the proximal section comprising a tubular shape that defines a proximal lumen; a distal section having a second cross-sectional dimension and being configured to be positioned in an efferent vessel of the bifurcation, the distal section comprising a tubular shape that defines a distal lumen; and a protruding section, between the proximal and distal sections, having a third cross-sectional dimension, the protruding section (i) being configured to abut an ostium of the aneurysm when the protruding section is positioned at the bifurcation, (ii) defining an intermediate lumen in fluid communication with the proximal and distal lumens, and (iii) having a strut pattern that is substantially the same as strut patterns of the proximal and distal sections; wherein the proximal, distal and protruding sections are expandable from a compressed configuration to an expanded configuration, characterised in that in the compressed configuration, cells of the proximal section and/or distal section have a first compressed cell size and cells of the protruding section have a second compressed cell size, wherein the first compressed cell size is greater than the second compressed cell size; and wherein, in the expanded configuration, the cells of the proximal section and/or distal section have a first expanded cell size and the cells of the protruding section have a second expanded cell size, wherein the first expanded cell size is substantially equal to the second expanded cell size. a proximal section having a first cross-sectional dimension and being configured to anchor in an afferent vessel of a bifurcation proximate to an aneurysm, the proximal section comprising a tubular shape that defines a proximal lumen; a distal section having a second cross-sectional dimension and being configured to be positioned in an efferent vessel of the bifurcation, the distal section comprising a tubular shape that defines a distal lumen; and a protruding section, between the proximal and distal sections, having a third cross-sectional dimension, the protruding section (i) being configured to abut an ostium of the aneurysm when the protruding section is positioned at the bifurcation, (ii) defining an intermediate lumen in fluid communication with the proximal and distal lumens, and (iii) having a strut pattern that is substantially the same as strut patterns of the proximal and distal sections; wherein the proximal, distal and protruding sections are expandable from a compressed configuration to an expanded configuration, characterised in that in the compressed configuration, cells of the proximal section and/or distal section have a first compressed cell size and cells of the protruding section have a second compressed cell size, wherein the first compressed cell size is greater than the second compressed cell size; and wherein, in the expanded configuration, the cells of the proximal section and/or distal section have a first expanded cell size and the cells of the protruding section have a second expanded cell size, wherein the first expanded cell size is substantially equal to the second expanded cell size.