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Table 3 Correlation between US findings and pathological margin involvement in US-guided lumpectomy group (r = 0.76, p = 0.01)

From: Intraoperative ultrasound reduces the need for re-excision in breast-conserving surgery

US findings Number of patients Involved margin (pathologically)
Adequate margins (≥5 mm) 60 4 (7 %)
Close margins (3–4 mm) 12 2 (17 %)
Minimally involved margins (≤2 mm) 8 3 (38 %)
Involved margins 4 2 (50 %)