A 30 year old woman presents with redness, pain, and worsening swelling of her right breast for 2 weeks.
There is no history of fever, itching, or trauma to the affected breast. Treatment with a 7-day course of oral antibiotics yielded no visible response.
Her medical history is unremarkable, and there is no family history of malignancy. Her first child was born 7 months ago, and is still being breastfed.