The risks specific to liposuction include:
Bruising -Bruising is to be expected and can take 2-3 weeks to resolve fully.
Swelling – A variable degree of swelling is typical and can persist for several weeks.
Bleeding – Requiring intervention is very uncommon following liposuction.
Infection – Because the wounds in liposuction are tiny, infection is uncommon.
Scars – The scars following liposuction are small (around 5mm) and can be red and thickened. They usually settle well by 12-18 months. Initially, friction burns around the wounds can occur from the cannula rubbing against the skin. These usually heal without problems.
Irregularities and contour problems in your skin – Minor lumps and irregularities are common following liposuction. If the liposuction is performed too aggressively in one area, a contour depression (dip) can be caused.
Numbness – You may have patches of numbness in your skin, and these invariably recover over time.
Developing a fluid collection (seroma) – Around 1 in 30 patients may form an accumulation of fluid under the skin. This is not serious and occasionally needs to be drained with a needle in the clinic.
Damage to underlying structures – There have been documented cases of injury to underlying structures such as the bowel or liver. Such cases are exceedingly rare, and there may be an increased risk if you have deep scars in the area being treated.
Undercorrection – Not removing enough fatty tissues leaving you with a minimal change.
Unsatisfactory cosmetic outcome – This can occur as a result of any of the above problems or if your expectations have not been managed.