Patterns of central nervous system and leptomeningeal involvement in advanced breast cancer with invasive lobular histology: a large multicenter study with a focus on estrogen receptor-positive/HER2-negative disease.
BACKGROUND Invasive lobular carcinoma (ILC) is known to exhibit distinct metastatic patterns compared with carcinoma of no special type (NST); however, little is known about its specific propensity for central nervous system (CNS) and leptomeningeal (LM) involvement, particularly in estrogen receptor (ER)-positive/huma...