<prompt> Brain metastasis are common among which of the following malignancyBreastTestisThyroidTongue  <response>: Ans a breast Ref: Sabistons textbook of surgery 18th editionMetastatic brain tumors are the most common tumors of the brain.They out number primary brain tumors by 10 to 1The most common primary sites are lung 50, breast cancer 15-20, unknown pri mary cancer 10-15, melanoma 10Metastases to the brain are multiple in more than 70 of casesMRI with gadolinium enhancement is the diagnostic study of choice for metastases 