Have a lrg seromas from hernia surgery surgeon said to put heat on it will this help it go away , is their anything else to do to help go away ?

Seroma: Seroma after hernia surgery is not uncommon. Diagnosis and treatment of post operative seroma is driven by avoiding further problems, (infection, drainage from the incision). So a conservative approach is initial recommendation. Seroma's resolve. Keep area clean and dry, heat or ice, mild pressure, (abdominal binder if ventral repair). If it persists, ultrasound guided aspiration is possible.

Common: Aero as usually resolve on their own. Keeping pressure on the area may help but time best option. If persists for more then several months or increases in size may need it evacuated with a needle.

Time: Obviously, there are many factors that go in to this such as the type of hernia repaired, repair technique, and you medical history. In general, most seroma will resolve on their own in weeks to months. Persistent seromas or those that are causing problems may need to be drained. See your surgeon to find out for sure. Best of luck.