(P008) Impact of Radiotherapy on Lymphotropic Invasive Micropapillary Carcinoma of the Breast: An Analysis From the National Cancer Data Base

Invasive micropapillary carcinoma (IMPC) is an uncommon variant of breast cancer, accounting for <2% of all cases. Previous studies of this subtype demonstrated a higher propensity for lymph node metastases compared with invasive ductal carcinoma. Due to this lymphotropic nature, patients with IMPC were once thought to experience worse survival outcomes compared to invasive ductal carcinoma. Our group previously performed analyses of IMPC patients using the Surveillance, Epidemiology, and End Results database and found survival outcomes comparable to invasive ductal carcinoma.

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