Will Having a Large Lipoma Underneath my Bicep Removed Leave a Large Scar?

Lipomas are benign fatty tumors that occur under the skin and less commonly within the muscle. They are associated with mild discomfort and a lump underneath the skin. It is always best to talk to an expert plastic surgeon to determine whether the lipoma is possibly a cyst or a tumor or hernia. We would have to remove the lipoma to be sure that it is not something else and we usually do this by sending it to a pathologist for evaluation. If a lipoma is painful, then an exam is needed to make sure it is not compressing on a nerve or whether the diagnosis is different. Aftercare for a lipoma includes gentle compression and Plato’s Scar Serum twice daily on the wound.

Best,
Dr. Karamanoukian
Realself100 Surgeon

The large lipoma under the biceps is very unusual. There are lipomas that are intramuscular lipomas. I would get an MRI with contrast before contemplating surgery. May also consider a Biobsy first to make sure you are dealing with a benign lipoma. MRI will show where the nerves and blood vessels are in relation to the lipoma. In any way you will have a scar, but this should be your last concern.
Make sure your surgeon is an experienced Board Certified Plastic surgeon. If he needs a Hand/orthopedic surgeon then that is fine. If the MRI shows the lipoma is wraped around vital structures a BIOBSY is manditory before a plan of excision

Lipomas can be removed for cosmetic reasons using an extraction technique or liposuction and a half centimeter incision. The problem is proving that it's a lipoma. This can be assured if it's subcutaneous (below the skin but above the deep fascia and muscle) and looks and acts like a lipoma. If it's another layer deep (sub-fascial) or in the muscle (intra-muscular) or below the muscle (sub-muscular) then it could be something more serious and shouldn't be treated with incomplete removal as with liposuction.
In the situation you describe, I would suggest a biopsy of the supposed lipoma through a limited incision and if it's clearly a lipoma from the pathology report then remove the majority of it with liposuction and minimal scar and risk to nerves. If it's a lipoma it's not necessary to remove it at all or completely. If it's something else like a fibrosarcoma then it needs major surgery and cosmetic considerations are not of paramount importance.