====== Lung cancer brain metastases ======

{{rss>https://pubmed.ncbi.nlm.nih.gov/rss/search/1PobQunavfdBZcKuiemGuLkD0BNE2sraIA5MxIK5SNHGnPlEo5/?limit=15&utm_campaign=pubmed-2&fc=20240227071216}}

===== Classification =====

see [[Non-Small cell lung cancer intracranial metastases]].

see [[Small cell lung cancer intracranial metastases]].

===== Staging studies =====
[[PET scan]]

[[Chest CT]]

[[Bone scan]]

[[Brain CT]]

[[Cranial magnetic resonance imaging ]]

===== Tumor microenvironment =====


Sun et al. applied single-cell [[RNA sequencing]] to profile [[immune]] and nonimmune cells in 4 [[glioma]] and 10 [[lung cancer]] samples.

The analysis revealed that [[tumor microenvironment]] (TME) cells are present in heterogeneous subpopulations. [[Lung cancer]] [[reprogrammed cell]]s into [[immunosuppressed]] state, including [[microglia]], [[macrophage]]s, [[endothelial cell]]s, and [[CD8]]+ T cells, with unique cell proportions and [[gene signature]]s. Particularly, they identified that a subset of [[macrophage]]s was associated with poor prognosis. [[ROS]] (reactive oxygen species)-producing [[neutrophil]]s was found to participant in [[angiogenesis]]. Furthermore, [[endothelial cell]]s participated in active communication with [[fibroblast]]s. Metastatic [[epithelial cell]]s exhibited high heterogeneity in chromosomal instability (CIN) and cell population.

Findings provide a comprehensive understanding of the heterogenicity of the [[tumor microenvironment]] and [[tumor cell]]s and it will be crucial for successful [[immunotherapy]] development for [[lung cancer intracranial metastases]]
((Sun HF, Li LD, Lao IW, Li X, Xu BJ, Cao YQ, Jin W. Single-cell RNA sequencing reveals cellular and molecular reprograming landscape of gliomas and lung cancer brain metastases. Clin Transl Med. 2022 Nov;12(11):e1101. doi: 10.1002/ctm2.1101. PMID: 36336787.)).


====Treatment====
see [[Lung cancer intracranial metastases treatment]].