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SEER Inquiry System - Report
Produced: 06/16/2025 1:06 PM
Question 20091110
Inquiry Details
References:
2007 SEER Manual, C-830. Appendix C
Question:
MP/H Rules--Bladder: Should an invasive urothelial carcinoma of the bladder diagnosed in 2004 followed by an in situ urothelial carcinoma of the ureter diagnosed in 2008 be reported as multiple primaries per the three-year guideline in Rule M7 or a single primary per the subsite guideline in Rule M8? See Discussion.
Discussion:
Rule M7 states, "Tumors diagnosed more than three (3) years apart are multiple primaries." Should this rule be modified to say, "Bladder tumors diagnosed more than three (3) years apart are multiple primaries"? Does Rule M7 apply to only bladder tumors or does this rule apply to tumors in any of the urinary sites similarly to Rule M8 which states, "Urothelial tumors in two or more of the following sites are a single primary: Renal pelvis (C659) Ureter (C669) Bladder (C670-C679) Urethra/prostatic urethra (C680)"?
Answer:
For cases diagnosed 2007 or later, Rule M7 pertains to renal pelvis, ureter, bladder and other urinary sites as defined by the topography codes listed in the header of these rules.
An invasive urothelial bladder tumor followed more than three years later by an in situ TCC of the ureter are reported separate primaries. Rule M8 applies when the tumors in these sites are diagnosed within three years of each other.
Cancer Site Category:
Bladder
Data Item Category:
N/A
Other Category:
N/A
Year:
2009
