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SEER Inquiry System - Report
Produced: 10/25/2025 8:05 AM
Question 20190026
Inquiry Details
References:
Solid Tumor Rules. Urinary; April 2019 update
Question:
Solid Tumor Rules (2018)/Multiple primaries--Bladder: Does Rule M11 in the 04/2019 Solid Tumor Rules Urinary update apply to synchronous/simultaneous tumors only or to multiple tumors with any timing? See Discussion.
Discussion:
Rule M11 states: Abstract a single primary when there are urothelial carcinomas in multiple urinary organs, but neither the Rule nor the Notes describe the timing of these multiple urinary organ carcinomas. Timing requirements for other rules are clearly stated.
Does Rule M11 have a timing requirement or is it intended to apply to all urothelial carcinoma tumors regardless of timing (and not already qualifying for application of a previous M rule)?
Answer:
The revised Urinary Solid Tumor Rules 2018 Rule M11, updated April 2019, removed the requirement of synchronous. This applies to urothelial carcinoma (8120) and its corresponding subtypes, regardless of behavior, that occur in more than one urinary site in a patient's lifetime. See change log for the April 2019 update to urinary rules.This is the same M/PH rule for multiple sites. Timing does not factor in to this rule.
