List 14 differential diagnoses for a well-defined mammographic mass.

1. Cyst
2. Fibroadenoma
3. Phylloides tumor
4. Carcinoma
5. Metastasis
6. Papilloma
7. Hematoma
8. Hamartoma
9. Lipoma
10. Intramammary lymph node
11. Abscess
12. Oil cyst (fat necrosis)
13. Galactocele
14. Raised skin lesion