Classification of breast tumors.

CLASSIFICATION OF BREAST TUMORS

EPITHELIAL TUMORS

• Benign epithelial tumors

  • Adenomas

    • lactating adenoma

    • Tubular adenoma

    • Apocrine adenoma

  • Duct papilloma

• Biphasic tumors 

  • Fibroadenoma

  • Phyllodes tumor

    • Benign

    • Borderline

    • Malignant

• Malignant epithelial tumors

  • Precursor lesion

    • Ductal carcinoma insitu

    • Lobular carcinoma insitu

    • Microinvasive carcinomas

    • intraductal papillary neoplasms

  • Invasive carcinomas

    • Invasive ductal carcinoma

    • Invasive lobular carcinoma

    • Medullary carcinoma

    • Tubular carcinoma

    • Cribriform carcinoma

    • Mucinous carcinoma

    • Papillary carcinoma

    • Secretory carcinoma

    • Metaplastic carcinoma

    • Inflammatory carcinoma

MYOEPITHELIAL LESIONS

• Myoepithelioma

• Adenomyoepithelioma

• Myoepithelial carcinoma

MESENCHYMAL TUMORS

• Benign mesenchymal tumors 

  • Vascular tumors 

  • Peripheral nerve sheath tumors

  • Lipoma

  • Leiomyoma

• Malignant mesenchymal tumors 

  • Angiosarcoma

  • Liposarcoma

  • Rhabdomyosarcoma

  • Osteosarcoma

  • Leiomyosarcoma

MALIGNANT LYMPHOMA

METASTATIC TUMORS

 

Reference

1. Fattaneh A. Tavassoli, Peter Devilee. Pathology and Genetics of Tumours of the Breast and Female Genital Organs. World Health Organization Classification of Tumours 2003