Abstract
Breast cancer (BC) is a heterogeneous disease. Different subtypes of BC exhibit a peculiar natural history, metastatic potential and outcome. Stereotactic radiosurgery is the most used treatment for brain metastases (BM), while surgery is reserved for large and symptomatic lesions. Whole-brain radiotherapy is employed in multiple BM not amendable to radiosurgery or surgery, and it is not employed any more following local treatments of a limited number of BM. A critical issue is the distinction from pseudoprogression or radionecrosis, and tumor regrowth. Considering the increase of long-term survivors after combined or novel treatments for BM, cognitive dysfunctions following whole-brain radiotherapy represent an issue of utmost importance. Neuroprotective drugs and innovative radiotherapy techniques are being investigated to reduce this risk of cognitive sequelae. Leptomeningeal disease represents a devastating complication, either alone or in association to BM, thus targeted therapies are employed in HER2-positive BC brain and leptomeningeal metastases.
Financial & competing interests disclosure
The authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties.
No writing assistance was utilized in the production of this manuscript.