Accelerated Partial Breast Radiotherapy With Either Mammosite or Intensity Modulated Radiotherapy

Inclusion Criteria:

Be a Tis, T1, N0, M0 AJC Classification
Have negative surgical margins (> or = 2 mm) after final surgery
Should have adequate skin spacing between balloon surface and surface the skin (> 7 mm)*
Patients with infiltrating lobular histologies should have breast MRI scanning as part of the initial staging to verify localized T1, or Tis disease
Multifocal findings (define as 2 or more breast quadrants) on MRI scanning should be further evaluated by ultrasound and, if necessary biopsy, to exclude multiquadrant disease.

Exclusion Criteria:

Be pregnant or breast-feeding
Have collagen-vascular disease
Inadequate surgical margins (< 2 mm)
Patients with malignant/suspicious calcifications