Hematoma after breast surgery is rare, and when addressed in a timely manner, patients recover without any issues. What truly matters are the techniques to lower its occurrence rate and an emergency contact system that connects you directly should an unforeseen hematoma occur. If these two elements are in place, a hematoma becomes not something to worry about, but something to manage.

How Often Does a Hematoma Occur?
A hematoma is a condition where blood collects within the surgical site. After breast augmentation, literature reports an incidence rate of 0.5–3% (Iwuagwu & Frame, 1997) and approximately 1% (Hsiao et al., 2002). This means about one to two people out of 100. While rare, it is an occurrence that can happen at any hospital, so preparation must be made with this possibility in mind. Most tend to occur within 3 days after surgery, especially during the night of the surgery and the early morning of the following day. The fact that the timeframe is predictable means we can be thoroughly prepared.
Why You Should Know About It in Advance
If a hematoma develops, the accumulated blood can cause inflammation around the implant and potentially lead to capsular contracture, where the surrounding capsule thickens. In a prospective study of 752 patients by Handel et al., the incidence of capsular contracture in patients who experienced a hematoma was 29%, compared to 13% in those who did not. A study by Codner et al. also reported 25% versus 8%. If the volume of bleeding is significant, it can affect overall systemic health, requiring emergency intervention.
These numbers convey a single, clear message: how quickly a hematoma is managed after it forms determines the outcome. Evacuating the pooled blood promptly and securing hemostasis minimizes tissue damage and inflammation, thereby reducing any lasting impact on the capsule. A hematoma treated within a few hours rarely leaves any long-term effects on subsequent recovery.
Symptoms Patients Should Be Aware Of
One breast suddenly swells and becomes firm. The pain does not respond to painkillers and progressively worsens. Bruising spreads rapidly. You feel dizzy or break into a cold sweat. If you experience any of these, you should contact us immediately. The symptoms are distinct and difficult to miss.
This Is Why I Provide My Personal Number
Hematomas occur most frequently when the clinic is closed. Right after surgery, I provide my patients with my personal phone number and advise them to call at any time, day or night, if they experience any abnormal symptoms. When the operating surgeon listens to the symptoms directly, judgment is fast and accurate. If a hematoma is suspected, we have the patient come in immediately and decide on prompt treatment right away.
From the patient's perspective, knowing that "I can reach my surgeon directly if anything happens" provides immense peace of mind during recovery. Most patients never need to use this number. Occasionally, some reach out with minor questions or simply to check if their surgeon really answers, and you are always more than welcome to contact me without hesitation. However, since it is after business hours, replies via KakaoTalk may be delayed, so calling is preferred.
Surgical Techniques That Minimize Hematoma
Most hematomas originate from blood vessels injured during the dissection of the pocket where the implant will be placed. Therefore, the method of dissection is directly linked to the occurrence of a hematoma. When dissecting under direct vision, blood vessels can be identified and cauterized before they are damaged. Blunt dissection—pushing and tearing tissue apart with fingers or instruments—or the recently popular method of inflating a balloon to create the space proceeds without visualizing the dissection plane, meaning torn vessels cannot be addressed on the spot. Literature also confirms that hematomas are more common with blind dissection techniques.
I adhere to a technique where I dissect and achieve hemostasis under direct visualization of the surgical site. It takes more time. Still, the most reliable way to reduce hematoma is to prevent bleeding points from forming in the first place, and for that, the surgeon must see the field with their own eyes. Even if faster and simpler methods exist, I recommend surgery performed under direct visual confirmation.
What to Check Before Surgery
During your consultation, there are three things you should ask. Does the clinic provide specific numbers regarding their hematoma rate? Is there a clear protocol for whom and how to contact if an issue arises at night or over the weekend? Does the surgeon explain the exact dissection method used? A plastic surgeon specializing in breast surgery should naturally be prepared with answers to these questions.
Hematomas are rare, and with proper preparation, they are entirely manageable. Lowering the probability through meticulous surgical technique, and ensuring immediate contact should one occur—make your decision after confirming that these two safeguards are firmly in place.
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