Evaluation of a Surgical Navigation System for Localization and Excision of Nonpalpable Lesions in Breast and Axillary Surgery

Table 2

Surgical and pathologic details of surgical excision using EnVisio Surgical Navigation system.

	N = 27
Devices excised within primary specimen	22 (81.5%)
SmartClip sent as separate gross specimen	4 (14.8%)
SmartClip in the same specimen as biopsy clip	22 (81.5%)
Retrieval of SmartClip as additional margin	1 (3.7%)
Median tumor margin: DCIS	3.0 mm (3–5)
Median tumor margin: invasive	5.0 mm (2–8)
Reexcision performed	0

DCIS, ductal carcinoma in situ; mm, millimeter.