HI Karen
I just had mine put back in after 6months of it being out. I never heard of the scar tissue issue. I had to have trach put in so he wanted to put the peg in it is not in the same place as the first one.

SCC T3N1 right side tongue DX7/24/06 44 yrs old
Tx 42 IMRT started 9/01/06 Cysplatin & 5fu 2x treatment ended 10/31/06. Partial neck discection 3/07 on right side.
Had tracheostomy 4/08. Had total Laryngectomy 6/09