What is the most common primary for Mets to the brain?
Breast or lung carcinoma?
Lungs > breast
Most common source of mets to brain is lung carcinoma particularly the small cell variety.
2nd most common is breast carcinoma.
However, the most common cause of meningeal metastasis is breast carcinoma.
The most common cancer that metastasizes to the brain is lung cancer. Thank you.