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SEER Inquiry System - Report
Produced: 02/09/2026 3:55 AM
Question 20240005
Inquiry Details
References:
2022 SEER Manual, 140-143. Mets at Diagnosis--Bone, --Brain
Question:
SEER Manual/Mets at Diagnosis--Lung: Would calvarium lesions invading the brain be both brain and bone metastasis or only bone metastasis? See Discussion.
Discussion:
Lung cancer, 2022
12/1/2022 PET/CT showed destructive hypermetabolic bone lesions in right frontal and left posterior calvarium. Left posterior calvarium lesion involves portions of left parietal and temporal bones w/invasion of mastoid air cells.
1/4/2023 MRI Brain showed large destructive mass involving left posterior temporal calvarium that extends into left mastoid region and may invade left distal transverse sinus.
2/8/2023 Radiation Oncology follow-up note: MD states there are extensive calvarium metastasis with the left parietal lesion invading the brain causing edema and MS-like changes.
2/13/23 Radiation Oncology Final Letter- Patient was treated with 1 EBRT fraction aimed at brain/skull before enrolling in hospice.
Answer:
Abstract as bone metastasis for the first two examples. Abstract as both bone and brain metastasis for the third and fourth examples in the respective Mets at Diagnosis fields based on the description provided.
