Table 3.

Classical pathological features and Microscopic findings of 69 cases of invasive beast carcinoma and their distribution over subtypes

		Subtype
Characteristics	Total	Luminal A	Luminal B	HER2	‘Basal like’
Histological type	69	42	24	1	2
Invasive carcinoma of no special type	52 (75.4%)	31 (73.8%)	21 (87.5%)	0	0
IDC	43 (62.3%)	26 (61.9%)	17 (70.8%)	0	0
IDC with osteoclasitc giant cell	1 (1.4%)	1 (2.4%)	0	0	0
IDC with invasive micropapillary	8 (11.6%)	4 (9.5%)	4 (16.7%)	0	0
Invasive carcinoma of special subtypea	7 (10.1)	4 (9.5%)	1 (4.2%)	0	2 (100%)
Invasive cribriform	1 (1.4%)	1 (2.4%)	0	0	0
Metaplastic	1 (1.4%)	0	1 (4.2%)	0	0
Mucinous	3 (4.4%)	3 (7.1%)	0	0	0
Secretory	2 (2.9%)	0	0	0	2 (100%)
Papillary carcinomab	6 (8.7%)	5 (11.9%)	1 (4.2%)	0	0
Invasive papillary	1 (1.4%)	1 (2.4%)	0	0	0
Encapsulated papillary	2 (2.9%)	2 (4.8%)	0	0	0
Invasive solid papillary	3 (4.4%)	2 (4.8%)	1 (4.2%)	0	0
Mixed (ductal/mucinous)	4 (5.8%)	2 (4.8%)	1 (4.2%)	1 (100%)	0
Histological grade	69	42	24	1	2
1	14 (20.3%)	11 (26.2%)	1 (4.2%)	0	2 (100%)
2	45 (65.2%)	28 (66.7%)	16 (66.7%)	1 (100%)	0
3	10 (14.5%)	3 (7.1%)	7 (29.2%)	0	0
Microscopic finding of tumor	69	42	24	1	2
Ductal carcinoma in situ	28 (40.6%)	17 (40.5%)	10 (41.7%)	1 (100%)	0
Necrosis	11 (15.9%)	7 (16.7%)	4 (16.7%)	0	0
Sclerotic/Hyalined stroma	22 (31.9%)	14 (33.3%)	8 (33.3%)	0	0
Calcification	7 (10.1%)	3 (7.1%)	3 (12.5%)	1 (100%)	0
Infiltration	65	40	22	1	2
Dermis	14 (21.5%)	10 (25.0%)	4 (18.2%)	0	0
Nipple	13 (20.0%)	6 (15.0%)	7 (31.8%)	0	0
Lymph node status	65	40	22	1	2
Positive	26 (40.0%)	15 (37.5%)	11 (50.0%)	0	0
Negative	39 (60.0%)	25 (62.5%)	11 (50.0%)	1 (100%)	2 (100%)

^aInvasive papillary carcinoma was categorized into papillary carcinoma other than invasive carcinoma of special subtype in this study.

^bTwo cases of intraductal papillary carcinoma were excluded in this statistical evaluation.