TNM v1.5 changes:
- All schemas where Tis is valid: For Combined N, when neoadjuvant treatment was given (Surgery sequence = 2 or 4) and no nodes were examined (Regional LN Positive = 98), values other than blank (or pX) for Path N resulted in the error message “RN Pos = 98, Path N should be blank”. When Path T = pIS, edits require Path N to be c0. The Combined N logic has been changed to accept Path N = c0 for schemas where Tis is valid.