SEER Inquiry System - Question 20120054 Details

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Produced: 10/27/2025 1:57 PM

Question 20120054

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Inquiry Details

References:

#1: Subject matter expert

#2: 2007 MP/H Rules

Question:

Histology/Behavior--Brain and CNS: What is the histology and behavior code for a "giant cell astrocytoma"? See Discussion.

Discussion:

The pathology report stated, "The giant cell astrocytoma should be considered at least grade 3." There is not a code in the ICD-O-3 for giant cell astrocytoma, NOS; there are only codes for astrocytoma, NOS [9400/3] and subependymal giant cell astrocytoma [9384/1].

Answer:

Code the morphology as giant cell glioblastoma [9441/3]. Glioblastoma and astrocytoma are both types of astrocytic tumors per the Brain and CNS Terms and Definitions, Chart 1, in the 2007 MP/H Rules Manual.

Cancer Site Category:

Brain and CNS

Data Item Category:

Histology, Behavior

Other Category:

N/A

Year:

2012