Management of synchronous phyllodes tumors with invasive breast carcinoma: A review of the literature and a case report breast

Phyllodes tumor is a relatively infrequent diagnosis in breast pathology, and even less commonly it can be associated with synchronous invasive or in situ breast carcinoma. We present an unusual case of a borderline phyllodes tumor coexisting with invasive lobular carcinoma and lobular carcinoma in situ. A review of prior similar cases demonstrates that malignant phyllodes tumors may be more likely to be associated with both triple-negative breast carcinomas as well as other primary malignancies, and as such tend to have worse outcomes. Management strategies should be tailored to individual patients' pathology with this in mind.