Any operation where surgery is required can bring with it possible post-operative complications. In the case of breast implant replacement surgery, the patient may experience a build-up of blood or fluid under the skin, also known as haematoma or seroma, which must be removed afterwards. We can also talk about the possibility of infections, the appearance of scars, sensory changes in the bust or even allergic reactions to various drugs or materials used during this procedure. As this is an operation that takes place under general anaesthesia, it is best to consult your doctor beforehand to find out the possible risks or adverse reactions that may occur during the change of breast implants.