CD20: Stained very occasional cells.
CD3: Stained scattered cells.
CD68: Stained many inflammatory cells.
CK: Stained only intact surface epithelium and scattered entrapped epithelial cells within inflammatory infiltrtae.
Ki-67: Labeled about 7 % of cells in hot spots.
Palatal ulcer.
One referred paraffin block and one H&E slide of previously submitted case with pathology number (1297-2026).
Palatal ulcer, biopsy and immunostaining:
COMMENT: