Histology (Pre-2007)--All Sites: What code is used to represent the histology with a final diagnosis of adenocarcinoma, signet ring type when the comment suggests a "mixed histologic pattern"? See discussion.
Heme & Lymphoid Neoplasms: How is cancer status to be coded when a patient diagnosed with MDS, undergoes treatment, but the MDS subsequently transforms to AML?
Grade: Can the nuclear grade value be coded in the grade field for any site, or is it restricted to sites where it is specifically listed as an option in the coding manual, i.e., breast, kidney, urinary sites, etc.?
Grade--Pancreas: Can the grade be coded when a biopsy is taken from the part of a primary tumor that has contiguously extended into an adjacent organ or structure? See Discussion.