Table 4.

Comparison of various studies.

	Preoperative diagnosis of breast cancer	N for CSM	N for standard PM	Number of CSM	Definition of negative margin	Reduction in reexcision	P value
Cao et al. [6]	Unknown	126	N/A	4–6	2 mm	61/103a
Hewes et al. [7]	Yes	957	N/A	4	1 mm	107/196b
Huston et al. [8]	Yes	45	49	4–6	2 mm	21%c
Jacobson et al. [9]	Unknown	125	N/A	4–6	2 mm	61/83d
Marudanayagam et al. [10]	Yes	394	392	4	Absence of tumor at resected margin	6.92%e	<0.01
Rizzo et al. [11]	Yes	121	199	4–5	1 mm	27.90%f	<0.05
Tengher-Barna et al. [12]	Yes	107	N/A	4	3 mm	24/47 g

CSM: cavity shave margin; PM: partial mastectomy.

^a,b,d,gThe overall final shave margin status was histologically negative in said amount of patients with histologically positive lumpectomy margins; therefore, ^areexcision was avoided in these patients.

^cReexcision rate in PM group 38.7% versus 17.7% in CSM group.

^eReexcision rate in PM group 12.5% versus 5.58% in CSM group.

^fReexcision rate in PM group 85.1% versus 57.2% in CSM group.