Clinicopathological characteristics and survival outcomes in patients with synchronous lung metastases upon initial metastatic breast cancer diagnosis in Han population

Table 2 Incidence of patients with lung metastases at first metastatic breast cancer diagnosis stratified by breast cancer subtype

	All metastatic patients, N (%)	With lung metastases	Incidence of lung metastases, %
HR+/HER2-	1180 (52.1)	386	32.7
HR−/HER2+	300 (13.3)	116	38.6
HR+/HER2+	365 (16.1)	130	35.6
Triple-negative	418 (18.5)	177	42.3
All subtypes	2263 (100.0)	809	35.7

ISSN: 1471-2407