logo logo
Search: Organ site Search: Tumor / Syndrome
WHO Classification of Tumours
WHO Classification of Tumours of the Breast and Female Genital Organs
Click for details
Tavassoli FA, Devilee P (Eds.)
World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of the Breast and Female Genital Organs.
3rd Edition
IARC Press: Lyon 2003

C50 - Breast:
The number attached to each tumour is the ICD-O morphology code of the International Classification of Diseases for Oncology (ICD-O) [1] and the Systematized Nomenclature of Medicine (http://snomed.org).
/0 benign tumours
/1 unspecified, borderline or uncertain behaviour
/2 in situ carcinomas
/3 malignant tumours.

1. Fritz A, Percy C, Jack A, Shanmuragatnam K, Sobin LH, Parkin DM, Whelan S (Eds) International Classification of Diseases for Oncology. World Health Organization: Geneva 2000

Ductal carcinomas
    8500/3 Ductal adenocarcinoma
        8022/3 Pleomorphic carcinoma
        8035/3 Undifferentiated carcinoma with osteoclast-like cells
    Precursor lesions
         Intraductal proliferative lesions
        8500/2 Ductal carcinoma in situ, NOS

Lobular carcinoma
    8520/3 Lobular carcinoma, NOS
    Precursor lesions
         Lobular neoplasia
        8520/2 Lobular carcinoma in situ, NOS

Special subtypes of invasive carcinoma
    8503/3 Invasive papillary carcinoma
    8507/3 Invasive papillary carcinoma
    8401/3 Apocrine adenocarcinoma
    8211/3 Tubular adenocarcinoma
    8201/3 Cribriform carcinoma, NOS
    8510/3 Medullary carcinoma, NOS
    8480/3 Mucinous adenocarcinoma
    8470/3 Mucinous cystic neoplasm (MCN) with an associated invasive carcinoma
    8490/3 Signet ring cell carcinoma
    8575/3 Metaplastic carcinoma, NOS
    8200/3 Adenoid cystic carcinoma
    8530/3 Inflammatory carcinoma
    8246/3 Neuroendocrine carcinoma, NOS

Rare variants of invasive carcinoma
    8502/3 Secretory carcinoma of breast
    8290/3 Oxyphilic adenocarcinoma
    8314/3 Lipid-rich carcinoma
    8550/3 Acinar cell carcinoma
    8315/3 Glycogen-rich carcinoma
    8410/3 Sebaceous adenocarcinoma

Intraductal papillary neoplasms
    8503/0 Intraductal papilloma
    8503/2 Intraductal papillary carcinoma
    8504/2 Intracystic papillary carcinoma

    8211/0 Tubular adenoma, NOS
    8204/0 Lactating adenoma
    8401/0 Apocrine adenoma
    8940/0 Pleomorphic adenoma

Myoepithelial lesions
    8983/0 Adenomyoepithelioma
    8982/3 Malignant myoepithelioma

Mesenchymal tumours
    9120/0 Hemangioma, NOS
    9150/1 Haemangiopericytoma
    8825/0 Myofibroblastoma
    8821/1 Desmoid-type fibromatosis
    8825/1 Inflammatory myofibroblastic tumor
    8850/0 Lipoma, NOS
    8861/0 Angiolipoma, NOS
    9580/0 Granular cell tumor, NOS
    9540/0 Neurofibroma, NOS
    9560/0 Schwannoma, NOS
    9120/3 Angiosarcoma
    8850/3 Liposarcoma, NOS
    8900/3 Rhabdomyosarcoma, NOS
    9180/3 Osteosarcoma, NOS
    8890/0 Leiomyoma, NOS
    8890/3 Leiomyosarcoma, NOS

Fibroepithelial tumours
    9010/0 Fibroadenoma, NOS
    9020/1 Phyllodes tumor, borderline
    9020/3 Phyllodes tumor, malignant

Malignant lymphomas
    9680/3 Diffuse large B-cell lymphoma (DLBCL), NOS
    9687/3 Burkitt lymphoma
    9699/3 Extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma)
    9690/3 Follicular lymphoma

Tumours of the nipple
    8506/0 Adenoma of nipple
    8407/0 Syringoma, NOS
    8540/3 Paget disease, mammary

Tumours of the male breast