Abstract

Objective To evaluate the feasibility of intra-operative ultrasound guide in breast conservative-surgery and its effect on positive margin rate and breast tissue volume.Methods Fifty-five cases of invasive breast cancer staged T1-2N0-1 were randomly assigned to palpation-guided group(control group) 26 cases and ultrasound-guided group(experiment group) 29 cases.Before and during operation,high-frequency ultrasound was used to guide the resection of breast cancer with 1 cm margin in experiment group.The resection margin positive rate deteced by tissue section frozen biopsy and resected breast tissue volume were compared between experiment and control group.Results The clinicopathologic features were accordant between two groups.The margin positive rate and near-margin positive rate in experiment group were 0 and 3.45％ respectively,slightly lower than that of control group 3.85％ and 15.38％,but with no statistical significance (P ＞ 0.05).The same situation occurred at the re-exision rate.The resected breast tissue volume in experiment group (32.40 ± 10.93) cm3 was lower than that of control group (55.11 ± 12.88) cm3,and with statistical significance (P ＜ 0.01).Conclusions Intra-operative ultrasound guide could reduce the margin positive rate and unnecessary resected brcast tissue volume in breast conservative-surgery,and improve cosmetic effect. Key words: Breast neoplasms ; Carcinoma; Breast conservative-surgery ; Ultrasonography

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