C168519Level 9
HER2-Negative Breast Carcinoma
**Semantic type:** Neoplastic Process
**Definition:** A breast adenocarcinoma that is negative for the expression of the HER2 receptor.
**Synonyms:** - HER2 Negative Breast Adenocarcinoma - HER2 Negative Breast Carcinoma - HER2 Negative Breast Carcinoma
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