I have had that a number of times. Sometimes when I am eating I crunch down on that sensitive tissue without even noticing it. Right before we went to Alaska, my left cheek inside was swollen with red and purple blotches and dark pigment cicles/spots. Go figure. Whatever it was - it did go away. This likely will too - these things happen even to those of us who have not had cancer. Hugs

Donna

Donna,69, SCC L Tongue T2N1MO Stg IV 4/04 w/partial gloss;32 radtx; T2N2M0 Stg IV; R tongue-2nd partial gloss w/graft 10/07; 30 radtx/2 cispl 2/08. 3rd Oral Cancer surgery 1/22 - Stage 1. 2022 surgery eliminated swallowing and bottom left jaw. Now a “Tubie for Life”.no food envy - Thank God! Surviving isn't easy!!!! .Proudly Canadian - YES, UNIVERSAL HEALTH CARE IS WONDERFUL! (Not perfect but definitely WONDERFUL)