BENIGN BREAST DISORDERS:

Abscess

Etiology: Usually related to breastfeeding, caused by keratin plug in duct

Diagnosis: History of mastitis, breast red/hot/painful, infant weaning or breastfeeding mother returning to work

Treatment: US-guided needle aspiration with intracavitary injection of antibiotics (91% cure rate); DOC: Nafcillin (lactating)/clindamycin (nonlactating); High rate of recurrence

Ultrasound features: Multiloculated hypoechoic collection; internal debris; echogenic/vascular rim; acoustic enhancement (fluid content)

(Ikeda 2010, Georgian-Smith 2014, Sabel 2015)

US mastitis