A 49-year-old postmenopausal woman presents to the surgical breast clinic due to a 5-week history of right breast swelling, redness, and a feeling of heaviness. She was initially evaluated by her primary care provider and completed a 10-day course of oral cephalexin for presumed mastitis, but her symptoms have progressively worsened. She has no personal or family history of breast cancer. Her temperature is 37.1°C (98.8°F). Physical examination reveals a diffusely enlarged right breast with prominent erythema covering approximately 60% of the breast surface. The skin demonstrates a pitted, edematous appearance resembling an orange peel (peau d'orange). A poorly defined, firm area is palpated deep within the central quadrant. A 1.5-cm firm, mobile lymph node is palpable in the right axilla. Arrange the following steps in the most appropriate chronological sequence for the optimal evaluation and definitive management of this patient.
- 1Bilateral diagnostic mammography and targeted right breast ultrasound
- 2Core needle biopsy of the underlying breast tissue and punch biopsy of the affected skin
- 3Administration of neoadjuvant systemic chemotherapy
- 4Surgical resection via a modified radical mastectomy
- 5Administration of comprehensive post-mastectomy radiation therapy