Collection of Specimens and Clinical Data for Patients With Recurrent or Metastatic Breast Cancer or Male Breast Cancer

This is not a treatment trial — it is a registry study that collects tissue samples, blood samples, and medical data from patients with pancreatic cysts or pancreatic cancer. Researchers will use these samples to better understand how pancreatic cancer develops and to look for early detection markers. **You may be eligible if...** - You have been diagnosed with a pancreatic cyst or pancreatic cancer - You are 18 or older - You are willing to provide tissue or blood samples and share your medical information - You are able to give informed consent **You may NOT be eligible if...** - You are unable or unwilling to provide samples or consent - You have a condition that the study team determines would prevent safe participation Talk to your doctor to see if this trial is right for you.