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SEER Inquiry System - Report
Produced: 01/08/2026 7:41 AM
Question 20010096
Inquiry Details
References:
#1: SEER Program Code Man, 3rd Ed, 11
#2: 2004 SEER Manual, 12
Question:
Multiple Primaries (Pre-2007)--Bladder: Should an invasive malignancy following an in situ malignancy by more than two months be a new primary? Why? See discussion.
Discussion:
Example: An in situ bladder case was diagnosed and treated. Three months later another TURB diagnosed an invasive bladder carcinoma. Is the invasive case reportable to SEER as a new primary?
Answer:
For tumors diagnosed prior to 2007:
Yes. These are two primaries.
In situ cancers are not included in SEER incidence rates. Incidence rates must correlate with mortality rates.
For tumors diagnosed 2007 or later, refer to the MP/H rules. If there are still questions about how this type of tumor should be coded, submit a new question to SINQ and include the difficulties you are encountering in applying the MP/H rules.
