welcome to health care magic..
Mam,,after any kind of surgery,scar tissue bridges the gap between the 2 incised wounds...and from that scar tissue hair wont develop..
similar to that in the scalp
hair wont grow after formation..rest of the places beyond the scar will grow nicely..
regarding your query just 2cm lipomas
means only 0.75to 1 cm incision will be there and that minimal area of scar wont be visible to any one unless on very keen observation...so stop worrying about that
hope you understand my answer..