SEER Inquiry System - Question 20130177 Details

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Produced: 07/05/2024 7:33 PM

Question 20130177

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Inquiry Details

References:

2007 MP/H Rules

Question:

MP/H Rules/Histology--Bladder: What rule and histology code apply when a TURB final diagnosis is small cell neuroendocrine carcinoma and high grade urothelial carcinoma? See Discussion.

Discussion:

The patient has a 6 cm tumor arising in posterior-lateral bladder extending to prostate, obliterates seminal vesicle, and invades pelvic wall.

TURB final diagnosis: Small cell neuroendocrine carcinoma. High grade urothelial carcinoma involves 10% of tumor.

Following the current MP/H single tumor rules, it appears Rule H8 applies. Per Rule H8, code the numerically higher code of 8120. By following this rule, it does not seem the histology code fairly represents this tumor.

Answer:

There is currently no rule in the urinary site MP/H Rules for this combination of histologies. The best option is to code the histology to 8045/3 [mixed small cell carcinoma], a combination of small cell with other types of carcinoma. The presence of small cell carcinoma drives the treatment decisions for this case.

This issue will be addressed in the next revision of the MP/H Rules.

Cancer Site Category:

Bladder

Data Item Category:

Histology

Other Category:

N/A

Year:

2013