Breast neoplasms

There are many types of breast neoplasms, which can be divided into the following broad over simplified categories as a starting point.

Intralobular and interlobular refer to the terminal duct lobular unit (TDLU).

Although many of the epithelial lesions/changes listed below are neoplastic, they are best thought of as neoplasms at increased risk and along a continuum with normal breast at one end and invasive carcinoma at the other.

Pathology

Risk factors

Subtypes

Malignant tumours
Adenocarcinoma

Adenocarcinomas account for 99% of breast cancer.

Sarcoma(s) of breast   (0.5-3% 6)
Metastasis(es) to breast
Breast lymphoma
Benign tumours

Related articles

Breast imaging and pathology

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