Cerebrospinal Fluid Testing in Leptomeningeal Progression of HER2-Negative Breast Cancer Reveals HER2 Positivity, Leading to HER2-Targeted Therapy: A Case Report

Seraphina Choi; Daniel Cassidy; Patricia Castillo; Eric A. Mellon; Carmen Calfa; Seraphina Choi; Daniel Cassidy; Patricia Castillo; Eric A. Mellon; Carmen Calfa

doi:10.7759/cureus.55483

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