What are common signs of fat necrosis and how common is this after a breast reduction or breast lift?

Fat necrosis in a mild form is common after breast reduction. Some of the fat liquifies and can drain out the incision under the breast and also make the breast red. It heals on it own and is usually not a major problem.

Fat necrosis is a condition that can occur after breast reduction or breast lift surgeries, although it is not extremely common. It happens when fatty tissue in the breast gets damaged and forms firm, round lumps. The common signs of fat necrosis include painless, round, firm lumps in the breast, skin that appears red or bruised, and sometimes, an oily or milky discharge if the lump is close to the skin surface. In some cases, the affected area might feel tender or painful. Fat necrosis can vary in size and may sometimes be mistaken for a breast cancer lump, which is why it's important to have any new lumps evaluated by a healthcare professional. These lumps typically form within a few weeks or months post-surgery and can resolve on their own over time. However, in some cases, medical intervention may be necessary. The likelihood of developing fat necrosis depends on various factors, including the extent of the surgery, individual healing processes, and the techniques used by the surgeon.

A reduction, especially a large one, does carry a small risk of fat necrosis. Typically, you will feel a hard ball of scar tissue, especially near or behind the scars. this can be removed later. Fat necrosis is uncommon with just a lift.