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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Large Painful Lump Under Appendix Scar On Right Lower Abdomen?

Hi I am 16 weeks pregnant, have been for two scans and the baby is growing normally in the right place according to the obgyn. In the last few weeks I have developed a large hard lump just under my appendix scar on my right lower abdomen. It isn t painful. In addition, for the last five days I have noticed small amounts of light brown discharge when I wipe. Any idea what s going on?
Thu, 3 Sep 2015
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General & Family Physician,  's  Response
Hi there and thanks for sharing your healthcare concern with HCM.

It sounds as though you have something called a seroma (collection of fluid that builds up under the skin near the incision site after surgery). This fluid takes a long time to build up, sometimes, even many months after surgery. In your case, I suspect that your expanding uterus has forced the seroma to come to the surface of your skin (hence the hard lump) and discharge its contents.

Seromas can be a problem if they get infected. Symptoms of infection include:
the lump growing painful
the discharge becoming pus-like and foul-smelling
low grade fever

Occasionally, seromas can dry up and harden. Sometimes, they might have to be drained by your doctor to prevent trouble. As you are pregnant, infection can pose a problem.

Therefore, you need to appraise your antenatal care provider of this lump urgently so that they can examine you and discuss the best course of action to prevent infection.

Thanks and all the best.
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What Causes Large Painful Lump Under Appendix Scar On Right Lower Abdomen?

Hi there and thanks for sharing your healthcare concern with HCM. It sounds as though you have something called a seroma (collection of fluid that builds up under the skin near the incision site after surgery). This fluid takes a long time to build up, sometimes, even many months after surgery. In your case, I suspect that your expanding uterus has forced the seroma to come to the surface of your skin (hence the hard lump) and discharge its contents. Seromas can be a problem if they get infected. Symptoms of infection include: the lump growing painful the discharge becoming pus-like and foul-smelling low grade fever Occasionally, seromas can dry up and harden. Sometimes, they might have to be drained by your doctor to prevent trouble. As you are pregnant, infection can pose a problem. Therefore, you need to appraise your antenatal care provider of this lump urgently so that they can examine you and discuss the best course of action to prevent infection. Thanks and all the best.