GAMUT I-8
BREAST ULTRASOUND - HYPOECHOIC LESIONS


COMMON
1. Abscess
2. Carcinoma 
3. Cyst, complicated (proteinaceous; punctured by partial needle aspiration; inflammatory ; infected; mildly hemorrhagic)
4. Fibroadenoma  
5. Fibrocystic change 
6. Intramammary lymph node 
7. Papilloma
8. Sebaceous cyst


UNCOMMON
1. Keratinaceous cyst
2. Lactational adenoma 
3. Lymphoma G; leukemia
4. Phyllodes tumor (formerly cystosarcoma phyllodes; giant fibroadenoma)
5. Pseudoangiomatous stromal hyperplasia (PASH)
6. Steatocystoma (simplex  or complex)
7. Superficial thrombophlebitis (Mondor's disease)
8. Tubular adenoma 





References