Local recurrence of breast cancer after mammosite® brachytherapy. Discussion

Women undergoing breast conservation therapy (BCT) for stage 1 breast cancer have adjuvant external beam radiotherapy (EBR). In addition, the use of brachytherapy radiation is being used. We present two local tumor recurrences for review. Our first patient underwent BCT, sentinel lymph node biopsy (...

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Bibliographic Details
Main Authors: VOTH, Matthew, BUDWAY, Raye, KELEHER, Angela, CAUSHAJ, Philip F, CANCE, William G, BLAND, Kirby I, BURNS, R. Phillip
Format: Conference Proceeding
Language:English
Subjects:
Biological and medical sciences
Biopsy
Breast cancer
General aspects
Gynecology. Andrology. Obstetrics
Mammary gland diseases
Mastectomy
Medical sciences
Radiation therapy
Therapy
Tumors
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Description
Summary:Women undergoing breast conservation therapy (BCT) for stage 1 breast cancer have adjuvant external beam radiotherapy (EBR). In addition, the use of brachytherapy radiation is being used. We present two local tumor recurrences for review. Our first patient underwent BCT, sentinel lymph node biopsy (SLNBx) and MammoSite® brachytherapy for a TlNOMO infiltrating ductal carcinoma (IDC) of the right breast. Pathology: 0.6 cm poorly differentiated ER, PR, and Her-2/ Neu negative IDC. At 18 months, she had palpable axillary lymph nodes. Fine needle aspiration and ultrasound-guided core biopsy of a nodule showed IDC. She underwent modified radical mastectomy (MRM) and EBR. Our second patient underwent BCT, SLNBx, and MammoSite® brachytherapy for a TlNOMO IDC of the left breast. Pathology: 0.8 cm poorly differentiated, ER+, PR-, and Her-2/Neu negative tumor. At 18 months, a retroareolar mass was detected. Ultrasound guided core needle biopsy showed recurrent IDC. She chose a re-excision and EBR and not MRM. Pathology: 1.3 cm poorly differentiated, ER+, PR-, and Her-2/Neu negative tumor. Our 2 recurrences were >2 cm away from the lumpectomy site and therefor outside the 1 cm treatment plan of the MammoSite® catheter. Both recurrences were biologically identical to the initial tumors and are felt to be local failures rather than new primaries. [PUBLICATION ABSTRACT]
ISSN:0003-1348
1555-9823