SEER Inquiry System - Question 20190002 Details

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Produced: 10/22/2025 1:46 PM

Question 20190002

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Inquiry Details

References:

#1: WHO Class CNS Tumors

#2: Solid Tumor Rules. Non-malignant CNS rules

Question:

Histology/Behavior--Brain and CNS: How should Histology and Behavior be coded for a polymorphous low-grade neuroepithelial tumor of the young (PLNTY) arising in the brain?

Discussion:

Answer:

Updated answer

Assign code 9413/0.

History:

Previous answer

Assign code 9505/1 for ganglioglioma. Per our expert neuropathologist, according to the paper that has done the most work on PLNTY cases, it appears most closely related to the ganglioglioma. It is surely a neoplasm as it has recurrent mutations and fusions seen in other tumors, again, most like gangliogliomas.

Cancer Site Category:

Brain and CNS

Data Item Category:

Histology, Behavior

Other Category:

N/A

Year:

2019