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Complete removal of nonpalpable breast malignancies with a stereotactic percutaneous vacuum-assisted biopsy
1Department of Surgery, Mount Sinai Medical Center, New York, NY 10029, USA.
Background:
Several devices have been developed for sampling nonpalpable mammographic breast lesions. Complete removal of malignancies with a stereotactic percutaneous directional vacuum-assisted biopsy instrument has been reported.
Study Design:
We reviewed our experience with the percutaneous vacuum-assisted biopsy instrument to identify instances of complete excision of cancers: no residual carcinoma found at surgical excision for malignancies diagnosed by the percutaneous vacuum-assisted biopsy instrument. The radiologic and pathologic characteristics of malignancies completely removed by the percutaneous vacuum-assisted biopsy instrument were compared with those of malignancies with residual carcinoma found at surgical excision.
Results:
Fifty-two malignancies were diagnosed by the percutaneous vacuum-assisted biopsy instrument: 16 infiltrating ductal carcinomas, 5 infiltrating lobular carcinomas, and 31 ductal carcinomas in situ. No residual carcinoma was found at surgical excision in 9 (17%) of the 52 malignancies. Patients with complete removal of the malignant lesion were younger than patients with incomplete removal (52 versus 58 years; p = 0.069). Completely removed malignancies were smaller on mammography (4 versus 17 mm; p = 0.213), and more specimens were removed (19 versus 15; p = 0.074). All nine completely removed malignancies presented with calcifications without a mass (p = 0.112), and all nine were ductal carcinoma in situ (p = 0.019).
Conclusions:
Complete removal of nonpalpable breast malignancies is possible with the stereotactic percutaneous directional vacuum-assisted biopsy device. Complete removal is more likely with removal of a large number of specimens from small areas of mammographic calcifications due to ductal carcinoma in situ.
