Study on Clinicopathological Features and Risk Factors of Patients with Multiple Primary Breast Cancers and Thyroid Disease

Table 2

Comparison of pathological types and stages between the two groups (%).

Index		Observation group ()	Control group ()
Pathological type	Invasive ductal carcinoma	21 (52.50)	20 (50.00)	0.050	0.823
	Other cancers	19 (47.50)	20 (50.00)
Histological grade	I–II	10 (25.00)	9 (22.50)	0.085	0.958
	III	15 (37.50)	16 (40.00)
	Unknown	15 (37.50)	15 (37.50)
T staging	T0-2	20 (50.00)	21 (52.50)	0.050	0.823
	T3-4	20 (50.00)	19 (47.50)
N staging	N0	21 (52.50)	19 (47.50)	0.200	0.655
	N1-3	19 (47.50)	21 (52.50)
TNM staging	0+I+II	22 (55.00)	19 (47.50)	0.450	0.502
	III+IV	18 (45.00)	21 (52.50)