Table 2. Clinical characteristics by different patterns.

Variable	Pattern 1 (n=21)	Pattern 2 (n=19)	Pattern 3 (n=16)	Pattern 4 (n=12)
Lesion extent	Small lesion (≤3 cm), adjacent to the areola	Larger than pattern 1, but no larger than 1/3 of the whole breast size	Larger than 1/3 of the whole breast size, but not spreading to the other side of the areola	In the areolar area, and spreading to both sides of the areola
Operative time (min)*	47±12	88±23	126±31	166±39
Blood loss (mL)*	35±6	66±28	144±60	256±93
Intraoperative complications, n (%)	0	0	0	0
Positive bacterial culture, n (%)	2 (9.5)	2 (10.5)	1 (6.3)	2 (16.7)

*P<0.05 among groups.