SEER Inquiry System - Question 20091098 Details

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Question 20091098

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Inquiry Details

References:

#1: 2007 SEER Manual, C-1066. Appendix C

#2: WHO Class Female Genital Tumors, 319. 2003

Question:

MP/H Rules/Histology: How is histology coded for a partial vulvectomy showing "vulvar intraepithelial neoplasia III, basaloid type"? See Discussion.

Discussion:

Is this VIN III (8077/2) or basaloid squamous cell carcinoma (8083 and change the behavior code from 3 to 2)? It seems that H4 and H6 both lead to 8083.

Answer:

For cases diagnosed 2007 or later, assign 8077/2 [Squamous intraepithelial neoplasia, grade III] for VIN III diagnoses, regardless of the type. According to the WHO Classification of Tumours (page 319), "VIN is predominately of the warty or basaloid types...."

Use the multiple tumors module to determine the histology code for VIN. Rule H21 applies.

Cancer Site Category:

N/A

Data Item Category:

Histology

Other Category:

N/A

Year:

2009