SEER Inquiry System - Question 20071094 Details

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Produced: 10/19/2025 12:21 PM

Question 20071094

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Inquiry Details

References:

2007 SEER Manual, C961-C962

Question:

Multiple Primaries--Brain and CNS: How many primaries should be recorded in a patient with von Hippel Lindau disease that has a hemangioblastoma of the cerebellum in 2003 and a hemangioblastoma of the brainstem in 2007?

Discussion:

Answer:

A tumor of the cerebellum (C716) and a tumor of the brainstem (C717) are multiple primaries because the topography codes are different at the fourth character of site.

History:

Reference: SPCSM 2004 and 2007; Data Collection of Primary Central Nervous System Tumors, NPCR Training Materials

In the previous editions of the SEER manual and benign brain MP/H rules, benign brain tumors represented different primaries if the first two numeric digits of ICD-O-3 topography codes differed. Per NPCR Training Materials, benign brain tumors are different primaries if all four digits of the site code differ. Rule M4 of the MP/H rules has since been corrected to read: Tumors with ICD-O-3 topography codes that are different at the second (CXxx), third (CxXx) and/or fourth (CxxX) characters are multiple primaries.

Cancer Site Category:

Brain and CNS

Data Item Category:

N/A

Other Category:

Multiple primaries

Year:

2007