1, the problem of the toxicity of Omedin: the purity of the product at the time of injection will not reach 100%, containing the monomer acrylamide is highly toxic, and it is suspected that in the human body for decades will gradually degrade into monomers. But its degradation speed and toxicity size, whether cancer-causing teratology, there is no complete study. I feel that it should be actively removed as early as possible, although there is no possibility of completely taking clean, but the possibility of problems related to the amount. 2, the clinical problems of Omniderm: common complications are hard masses, infection, pain, displacement. Because it is an injection method, the occurrence of problems can not be completely removed is completely contrary to the principles of plastic surgery, by the vast majority of conscientious specialist physicians to resist. Even injecting one’s own fat for breast augmentation has been restricted by the American Society of Plastic Surgery. Because of the many problems, they have made some improvements in the injection method in recent years, such as peeling the cavity first and injecting it two days later, and putting it in a silicone bag, but none of them have completely solved these problems. I have seen some injection is very concentrated, the shape and feel are very good, even better than our implants are a lot of patients, but this good condition will change, because with gravity, extrusion, and the surrounding tissue degeneration and other changes, the omegadine will gradually shift, or by the body tissue separation package, can appear lump, as well as the appearance and feel of the change. 3.Ormidine removal problem: how much to take out is related to whether the injection is concentrated and the level of injection, before surgery to do magnetic resonance imaging (MRI) can be a preliminary estimate. ultrasound examination is not very meaningful. Very few patients can take out more than 90%, most of the amount taken out in about 70%, and some patients take out less than 30%, or even less. The removal method is determined by the MRI results. If it is concentrated, aspiration is the main procedure, otherwise partial incision is required, which can damage the breast. The physician should take into account the best possible removal and not overly damage the breast tissue. 4. Re-implantation: In principle, I do not advocate re-implantation of implants. Because it is not possible to take clean omegadine will communicate with the prosthesis, once the infection or other lesions occur, the prosthesis must be removed. In addition residual Omnidine formed lumps, tissue degeneration hardening will affect the shape and feel of the prosthesis, and even chronic exudate accumulation. However, some patients have a strong request and we have done many reimplantation of the prosthesis, which requires extra care from the physician. Whether the reimplantation procedure is done in one visit with the removal of the Olmidine also depends on the circumstances. As the specialist’s knowledge and experience of these issues has been accumulated over the past few years, each physician’s opinion will be different, as well as their experience and skill level, so please compare patients and stop looking at advertisements. 5, the problem of pregnancy and breastfeeding: there are no reports of fetal malformations caused by Omnidene. However, you should not breastfeed, because the foreign body in the injected breast is easily infected, plus the injection of foreign body will block the ducts of the breast, resulting in milk stagnation, more likely to get mastitis. I have received several cases of patients with multiple breast perforations and 2000 ml of pus cleared out. This is why it is important to withdraw milk quickly after delivery, using a breast pump to suck out the milk that has not been completely returned and, if necessary, using antibacterial agents for a few days. Do not give the milk sucked out to the child for fear of foreign body exclusion. 6, other parts of the injection problem: most common is the augmentation of the temple, cheek, and buttocks and legs, I have also seen injections to the eyelids. As the situation is different, need to check, specific analysis.