Table 7.
Some of the recent clinical experience with MammoSite [29]
| Institution | APBI technique | No. Of cases | Follow-up (years) | Inclusion criteria and definition of target | Ipsilateral breast recurrence |
|---|---|---|---|---|---|
| American Society of Breast Surgeons, MammoSite Breast Brachytherapy Trial [59–64] | 34 Gy/10 fr/5 d | 1255 | 2.5 | > 45 years, T6 2 cm, N0, negative margins, ductal only, applicator placement < 10 weeks postoperative, cavityP3 cm in one dimension, no EIC, |
2 years – 1.11%, 3 years – 1.79% |
| Texas Cancer Clinic San Antonio [65] | 34 Gy/10 fr/5-7 d | 67 | 1.1 | ≥ 45 years, T < 3 cm, N0, negative margins, lumpectomy cavity 3-6 cm | NA |
| Kaiser Pernamente Los Angeles Medical Center [66, 67] | 34 Gy/10 fr/5-7 d | 51 | 1.3 | ≥ 45 years, T6 2 cm, N0, ductal only, negative margins | 0 |
| Rush University Medical Center, Chicago [68, 69] | 34 Gy/10 fr/5-7 d | 78 | 2.2 | ≥ 45 years, T < 3 cm, N0, negative margins | 7.1% |
| Medical University of South Carolina [70] | 32 Gy/10 fr/5-7 d | 37 (7 with DCIS) | 0.5 | any age, pTis-pT2N1, negative margins | NA |
| Tufts New England [71, 72] | 34 Gy/10 fr/5-7 d | 38 | 1.4 | any age, T < 3 cm, ductal and DCIS, N0 (solitary nodal micrometastasis accepted), negative margins > 1 mm | NA |
| European MammoSite trial [73, 74] | 34 Gy/10 fr/5-7 d | 28 | 1.2 | ≥ 60 years, T ≤ 2 cm, ductal only, grade 1/2, margins > 5 mm, ER +, balloon-skin distance > 7 mm, lumpectomy cavity > 3 cm, no EIC | 0 |
EIC – extensive intraductal component; DCIS – ductal carcinoma in situ; ER – estrogen receptor; PR – progesterone receptor; N/A – data not available; d – days; fr – fractions