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KMID : 1114620090060020098
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Journal of the Korean Society for Breast Screening
2009 Volume.6 No. 2 p.98 ~ p.102
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Factors predicting the residual lesion after complete excision of benign breast mass with US-guided vacuum-assisted device
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Shin Jung-Hee
Han Boo-Kyung
Ko Eun-Young
Kang Seok-Seon
Hahn Soo-Yeon
Nam Mee-Young
Hwang Ji-Young
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Abstract
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Purpose: To retrospectively evaluate the factors predicting the residual lesion after complete excision of benign breast masses with ultrasonographically (US)-guided vacuum-assisted device.
Materials and Methods: One hundred thirty four patients with 169 benign breast masses underwent US-guided vacuum-assisted biopsy by five radiologists for the complete excision of mass between January, 2004 and December, 2004. They were divided into group with and without residual lesion in follow-up US after 6 months. Two groups were compared to assess the factors predicting the residual lesion; needle gauge (11G vs. 8G), the presence or absence of postprocedural hematoma, the number of mass (single vs. multiple), the size of mass (≤1 cm, vs. >1 but ≤2 cm, vs. >2 cm), the location of mass (periareolar, vs. mid, vs. peripheral) and the radiologist`s procedural experience (< 1 year, vs. ≥1). Statistical analysis was used with Chi-square test or Fisher`s exact test.
Results: Of 134 patients with 169 benign masses, 19 patients (14%) had 24 residual lesions and 115 patients (86%) with 145 masses showed no evidence of residual lesion in follow-up US. The mass >2 cm (30%) had more common residual lesion after complete excision with US-guided vacuum-assisted device than mass 1 cm (5%) (p = 0.005). Residual lesions are more frequent in the presence of postprocedural hematoma (30%) (p = 0.039). Radiologist’s procedural experience < 1 year is more common in residual lesions rather than ≥ 1 year (40% vs. 10%, p = 0.002). There were no statistical differences in needle gauge (p = 0.072), the number of mass (p = 1.000) and the location of mass (p = 0.157) between groups with and without residual lesion.
Conclusion: The size of mass, postprocedural hematoma, and radiologist`s experience are important predictive factors in residual lesions after a complete excision of masses with the US-guided vacuum-assisted device.
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KEYWORD
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Breast, neoplasms, Ultrasonography, Vacuum-assisted biopsy, Excision
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