[A Case Report of Metastatic Breast Cancer with Peritoneal Metastasis and Massive Ascites Responding to CDK4/6 Inhibitor(Palbociclib)].

A 52-year-old woman was presented with abdominal distension. Chest-abdominal CT showed some tumors in the left breast, enlarged axillary lymph nodes, ovary metastasis peritoneal thickening, a large amount of ascites. The diagnosis of needle biopsy in the breast mass was invasive ductal carcinoma, Luminal A type.

[Conversion Therapy for HER2-Positive Metastatic Breast Cancer with Intrathoracic Lymph Node Metastasis].

A 42-year-old woman consulted our hospital with chief complaints of a right breast mass and pain. Based on needle biopsy of the breast tumor, the pathological diagnosis was invasive ductal carcinoma(scirrhous type), which tested positive for estrogen, progesterone, and HER2 receptor. PET-CT(FDG)showed intrathoracic lymph node metastasis.