i also was born with this and also have a bigf scar not so nice looking n to tell u the truth u realy shouldnt worry about getting surgery to fix it but if u really want to u would actully need to talk to a gi n also may need his ok to go so cuz under ur scar is different from anyone else who know what is were so u would need to talk to someone about ur past surgeries b4 cuz there are many risk of being cut open to many times trust me going on my 5 surgery
You need to contact a Gastroenterologist to evaluate how invasive this may be, then he can refer you to a plastic surgeon. Rubbing vitamin E on scars have proven to make them less noticeable. Take care.