====== Brain Metastases Classification ======

see [[Intracranial Metastases Classification]]

[[Brain metastases from cancer of unknown primary site]].
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From different cancers.

For example:

[[EGFR-Mutant Non-Small-Cell Lung Cancer Intracranial Metastases]]

[[Bladder cancer intracranial metastases]].

[[Melanoma brain metastases]].

[[Brain metastases from ovarian cancer]].

[[Brain Metastases from Endometrial Cancer]].

[[Colorectal cancer]] (CRC) infrequently causes [[brain metastases]] (BM) (1.2%) 
((Schouten LJ, Rutten J, Huveneers HA, Twijnstra A. Incidence of brain metastases in a cohort of patients with carcinoma of the breast, colon, kidney, and lung and melanoma. Cancer. 2002;94:2698–2705.)).
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see  [[Lung cancer intracranial metastases]].

see [[Multiple brain metastases]].

===== Frontal lobe metastases =====

[[Frontal lobe metastases]].

[[Motor cortex brain metastases]]

===== Temporal lobe metastases =====

[[Temporal lobe metastases]].


====Distribution====
The majority of brain metastases originate from primary cancers in the lung (40–50%) or breast (15–25%), or from melanoma (5–20%) ((Schouten LJ, Rutten J, Huveneers HA, Twijnstra A. Incidence of brain metastases in a cohort of patients with carcinoma of the breast, colon, kidney, and lung and melanoma. Cancer. 2002;94:2698–2705.))

They are common in elderly population and mostly due to primary lung. Adenocarcinoma was the most common histology of primary. Majority of lesions has been observed at parietal lobe 
((Saha A, Ghosh SK, Roy C, Choudhury KB, Chakrabarty B, Sarkar R. Demographic
and clinical profile of patients with brain metastases: A retrospective study.
Asian J Neurosurg. 2013 Jul;8(3):157-61. doi: 10.4103/1793-5482.121688. PubMed
PMID: 24403959.)).

===== Cystic brain metastases =====

[[Cystic brain metastases]]