First, polyacrylamide hydrogel Oxymethadine and Ingenieur Farrer are chemically known as polyacrylamide hydrogel, the difference is that the former is imported, the latter is domestically produced, also known as “artificial fat”. Because “no surgery, no bleeding, no hospitalization, no scar, fast breast augmentation” and other gorgeous ads to attract many women. Second, side effects: body surface omadin, Ingenieur Farrer injection is generally six months after the development of tissue denaturation from jelly-like to tofu dregs-like, away from the original plastic function, filler area hardness, nodules, or diffusion. Chest deep injection is generally two years and a half degeneration, downward shift, hard knot formation of periosteal contracture and other complications. Thousands of patients who have received injections are faced with the problem of whether they need to be taken out. At present, in the clinic, there are two types of patients who need to be taken out as soon as possible: one is the emergence of a variety of uncomfortable symptoms, such as localized redness and swelling, pain, hardness, deformation, general discomfort, the injections are obviously shifted, and so on; one is the psychological pressure is too heavy, worrying about the hazards of injections on the body and the long term uneasiness, and has affected the normal life of the person. Third, the surgical method This substance is simple to inject, but it is not so simple to remove. Because of the direct contact and adhesion between the injected substance and the tissue cells, it is impossible to remove the substance completely, unless the injection site tissue is completely removed. However, it is possible to remove most of the injected material as much as possible, so that the residue can be reduced to the lowest possible level, in order to minimize the possible harm of the injected material to the body. The difficulty of removal varies due to the different levels of injection, the concentration of injection, and the thickness of the fibrous package formed by each person. There is no advantage of endoscopy from the remote opening than areola incision, the latter can be easier to operate directly under direct vision, and endoscopy has the possibility of causing injections to be “planted” in a remote location. 1, areola incision: the operation can be carried out under local anesthesia, through the areola incision, under direct vision to remove the filling material, can be taken out as far as possible, is currently the most thorough way of a surgical method, after the operation, the scar of the incision in the areola is therefore not obvious, is currently used more of a method. The disadvantage is that the trauma is relatively large. 2.Minimally invasive suction method: minimally invasive suction under local anesthesia, minimal trauma, fast postoperative recovery, especially suitable for customers with no displacement of the filling and no separation, and is also a method that is currently used more. Removal of Inderflex (Oxybutynin) requires doctors to be more responsible, patient and meticulous. Careful consideration should be given to the pre-operation examination (CT or MRI is recommended to understand the distribution of the filling), the choice of incision, the possible problems of the operation and the changes in the shape after the removal, and the possibility of immediate placement of the prosthesis.