SEER Inquiry System - Question 20081052 Details

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Question 20081052

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Inquiry Details

References:

#1: 2007 SEER Manual, C-1065

#2: ICD-O-3, 94

Question:

Histology: What is the histology code for a soft tissue thigh mass that was diagnosed as Ewing sarcoma/PNET, primitive neuroectodermal tumor?

Discussion:

Answer:

The histologies stated for this case are Ewing sarcoma (9260) and PNET, primitive neuroectodermal tumor,(9364)*. Use the Other Site Rules, starting with H8. Stop at H17 and assign the higher histology code -- 9364/3 [Peripheral neuroectodermal tumor].

*The term "PNET" is used for two different tumors. One is primitive neuroectodermal tumor (9473) and pertains to brain tumors per ICD-O-3 review. The other is peripheral primitive neuroectodermal tumor (pNET or PPNET 9364) and pertains to bone or soft tissue tumors. This case is stated to be soft tissue and Ewing sarcoma, so it is 9364 rather than 9473.

Cancer Site Category:

N/A

Data Item Category:

Histology

Other Category:

N/A

Year:

2008