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

Table 1

Patient and tumor characteristics of EnVisio Surgical Navigation system localized cohort (n = 22).

	N = 22
Age (years)	62 (42–81)
BMI	26.9 (22–44)
History of previous ipsilateral breast surgery	2 (9.1%)
Received neoadjuvant chemotherapy	9 (52.9%)
Median tumor size (cm)	1.4 5 (0.4–3.6)
Multifocal	2 (9.1%)
Preoperative histopathology
Atypia	1 (4.5%)
DCIS	4 (18.2%)
IDC	12 (54.5%)
ILC	2 (9.1%)
Mixed IDC/ILC	1 (4.5%)
IDC with DCIS	1 (4.5%)
IMC	1 (4.5%)

Neoadjuvant chemotherapy is only offered to patients with invasive tumors and the denominator for this particular variable was n = 17. DCIS, ductal carcinoma in situ; IDC, invasive ductal carcinoma; ILC, invasive lobular carcinoma; IMC, invasive mammary carcinoma.