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SEER Inquiry System - Report
Produced: 02/08/2026 7:11 AM
Question 20100095
Inquiry Details
References:
2010 SEER Manual. Appendix C
Question:
MP/H Rules/Multiple primaries--Kidney, renal pelvis: In a patient who was never disease free because of multiple recurrences of invasive transitional cell carcinoma of the bladder originally diagnosed in 2004, is an invasive high grade urothelial carcinoma of the renal pelvis diagnosed in 2010 a new primary? See Discussion.
Discussion:
Patient has invasive TCC of the bladder diagnosed in 2004, and has never been disease free.
In 2/18/10 a left renal pelvis wash showed urothelial carcinoma, high grade.
On 4/7/10 a nephroureterectomy revealed high grade urothelial carcinoma with sarcomatous and squamous differentiation invading through pelvic wall and perihilar soft tissue.
Is this a new renal pelvis primary?
Answer:
For cases diagnosed 2007 or later, the renal pelvis is a new primary per rule M7. M7 will be better explained in the revised MP/H rules, but the rationale is that no field effect was present for more than 3 years. Although the bladder CA continued to recur, there were no other organs involved until 2010. M7 is intended to make the renal pelvis a new primary because there was no field effect (no organs other than bladder involved) for more than 3 years.
