47-Year-Old Woman Presents With a Breast & Lung Mass

A 47-year-old woman presents with an ill-defined mass in the right breast. Further evaluation shows the presence of discrete tumor nodules in the right lung. A breast biopsy and a lung biopsy are performed. What is your diagnosis?

A 47-year-old woman presents with an ill-defined mass in the right breast. Further evaluation shows the presence of discrete tumor nodules in the right lung. A breast biopsy and a lung biopsy are performed and shown, respectively.

 

 

What is your diagnosis?