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Mammographic Abnormalities Caused by Percutaneous Stereotactic Biopsy of Histologically Benign Lesions Evident on Follow-Up Mammograms

Robert L. Lamm1 and Roger J. Jackman

1 Both authors: Department of Radiology, Palo Alto Medical Clinic, 795 El Camino Real, Palo Alto, CA 94301



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  		Fig. 1A. —73-year-old woman with history of benign percutaneous right breast biopsy using 11-gauge directional vacuum-assisted technique. Craniocaudal (A) and mediolateral oblique (B) prebiopsy right mammograms show 8-mm cluster of pleomorphic microcalcifications in upper outer quadrant. Calcification anterior to clustered biopsied calcifications on B is located 8 cm medially.

 


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  		Fig. 1B. —73-year-old woman with history of benign percutaneous right breast biopsy using 11-gauge directional vacuum-assisted technique. Craniocaudal (A) and mediolateral oblique (B) prebiopsy right mammograms show 8-mm cluster of pleomorphic microcalcifications in upper outer quadrant. Calcification anterior to clustered biopsied calcifications on B is located 8 cm medially.

 


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  		Fig. 1C. —73-year-old woman with history of benign percutaneous right breast biopsy using 11-gauge directional vacuum-assisted technique. Craniocaudal (C) and mediolateral oblique (D) right mammograms obtained 6 months after percutaneous biopsy show 7-mm spiculated density on C and no perceptible density on D. Metallic clip marks biopsy site. Slight increase in density of background scattered fibroglandular tissue is presumed related to hormone replacement therapy that was started 6 months before these mammograms were obtained. Calcification inferior to metallic clip on D is situated 8 cm medial to biopsied calcifications. Punctate opacity anterior to metallic clip on D represents artifact.

 


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  		Fig. 1D. —73-year-old woman with history of benign percutaneous right breast biopsy using 11-gauge directional vacuum-assisted technique. Craniocaudal (C) and mediolateral oblique (D) right mammograms obtained 6 months after percutaneous biopsy show 7-mm spiculated density on C and no perceptible density on D. Metallic clip marks biopsy site. Slight increase in density of background scattered fibroglandular tissue is presumed related to hormone replacement therapy that was started 6 months before these mammograms were obtained. Calcification inferior to metallic clip on D is situated 8 cm medial to biopsied calcifications. Punctate opacity anterior to metallic clip on D represents artifact.

 


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  		Fig. 2A. —75-year-old woman with history of needle-localized lumpectomy and radiation therapy for right breast impalpable infiltrating ductal carcinoma. Craniocaudal (A) and mediolateral oblique (B) right mammograms show 12-mm spiculated mass in upper outer quadrant at lumpectomy site. Lesion has been stable for 7 years after lumpectomy.

 


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  		Fig. 2B. —75-year-old woman with history of needle-localized lumpectomy and radiation therapy for right breast impalpable infiltrating ductal carcinoma. Craniocaudal (A) and mediolateral oblique (B) right mammograms show 12-mm spiculated mass in upper outer quadrant at lumpectomy site. Lesion has been stable for 7 years after lumpectomy.

 

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