Parotid Gland Primary - C079. Histology: Carcinoma in situ arising in
a pleomorphic adenoma - M8941/2. AJCC, page 70, does not have a Tis
value. However, CS allows for cs extension to be 00 and derives to
PTis, Stage 0. Will there be a change in AJCC or this an oversight in
CS? Referenced AJCC and CS. How would you code this using AJCC?