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?
Surgery of Primary Site/Date Therapy Initiated--Head & Neck: Would a biopsy, NOS, that removed the majority of the tumor be used to code these fields? See Description.
Laterality--Brain and CNS: When a meningioma extends to both right and left sides, is laterality coded 4 for bilateral or 9 for midline? See Discussion.
Multiplicity Counter: Are in situ tumors diagnosed more than 60 days after invasive tumors of the same site and histology included in the Multiplicity Counter?
Histology--Ovary: How is histology coded for an ovarian mucinous neoplasm of low malignant potential (borderline mucinous cystadenoma) that shows extensive intraepithelial carcinoma and focal microinvasion? See Discussion.
EOD-Size of Primary Tumor--Breast: When the pathology report does not specify dimensions for the invasive component, how is tumor size coded? See discussion.
Grade--Liver: How should grade be coded for a liver lesion treated with radio frequency ablation (RFA) followed by a transplant showing moderately differentiated hepatocellular carcinoma? See discussion.