A member asked:

Please help! what is the cause of brain tumer ?

A doctor has provided 1 answer
Dr. Eric Chevlen answered

Specializes in Internal Medicine - Oncology

Unknown: Primary brain tumors are those which begin in the brain. Metastatic brain tumors are those which spread there from another site (such as lung or breast). The cause of brain tumors is not known. Smoking is the major cause of lung cancer.

Answered 7/4/2014

3.9k views

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