Adaptive Repeat Quad Shot Radiation Therapy for Uncontrolled Symptomatic Fungating or Skin-Infiltrating Primary and Regional Nodes in Patients with Metastatic Breast Cancer: Durable In-Field Tumor Control Without Interrupting Systemic Therapy - Whoon Jong Kil, MD; Wyatt Smith, CMD; Eugene Muchnik, MD; Ryan Collins, MD; David Cousins, MD (Advances in Radiation Oncology)