
T-DXd and Dato-DXd are now approved treatments in Japan for patients with breast cancer.
A 36-year-old woman presents with history of previous breast implants and induration of the left breast. What is your diagnosis?
A 36-year-old woman presents with history of previous breast implants and induration of the left breast. Imaging does not show a well-defined mass. A surgical biopsy is performed. What is your diagnosis?
Based on the image shown, what is your diagnosis?

!["Patients [with cancer] and physicians would rather have a fixed-duration treatment, if possible," said Julie M. Vose, MD, MBA, at SOHO 2026.](https://cdn.sanity.io/images/0vv8moc6/cancernetwork/1cfb57db416943d8f8690afb0bc0d13aa3d90683-400x400.jpg?w=350&fit=crop&auto=format)



