Abstract: A removable porous stent is disclosed, which can be placed in tubular structures. In at least one embodiment, it can be placed at locations, which are unsuitable for permanent stents, like across important branches in the vasculature preferably in combination with anticoagulation. The walls of the stent are freely permeable for the blood flow. A temporary stent can be used during treatment of dissections with involvement of side branches. The dissected membrane is relocated to its original place and held in place by the stent until the healing process has reattached the membrane. At this point the stent will be removed. The removable stent can also be used, in at least one embodiment, as a carrier of chemotherapy and/or radiation to be placed in tubular structures for local treatment of cancer. The time for treatment is controlled and finished at removal. This approach will give the possibility to increase dosages and reduce side effects.