Cold Spring Harbor Laboratory (CSHL) is at the forefront of using organoid technology to study and treat cancer. Organoids are tiny 3D clusters of cells that are miniature versions of patients’ tumors. Now, CSHL Cancer Center Director David Tuveson and Matthew Weiss, a physician at Northwell Health, have found that pancreatic tumor organoids may help guide decisions about a patient’s initial treatment before tumor-removal surgery. They piloted a rapid organoid screening test that can yield results in as early as a week.