Observational study of treatment results in adults with benign or malignant pancreatic disease

This study will be a retrospective chart review of patients who have been diagnosed with the benign or malignant pancreatic disease under the practice of Dr. Rohan Jeyarajah, M.D., Dr. Houssam Osman M.D., and Dr. Edward Cho M.D., Sc.M. at Methodist Health System Hospital in Richardson, Texas(TX). The investigators plan to conduct an analysis of patients meeting the inclusion criteria from 2005 to present. Study will also be conducted by the PI, Sub-Is, surgery fellows, office staff and clinical research coordinator who are delegated to do by the PI. Data will be obtained by looking through either investigator's patients or through a national database. Data will be analyzed primarily by the study conductors.