The invention provides a pharmaceutical composition in form of emulsion or microemulsion for use in an endoscopic procedure, preferably said endoscopic procedure comprising the administration of said pharmaceutical composition to a human with the aim of improving and facilitating the resection of the lesion by raising the area where the lesion is located. The invention herein disclosed provides a method for performing an endoscopic procedure, said method preferably comprising the administration of a pharmaceutical composition in form of emulsion or microemulsion to a human.