Autoimmune Pancreatitis Not Otherwise Specified (AIP-NOS): The Importance of Gastroenterology Consultation When Clinical Findings Are Concerning for Pancreatic Cancer.

Introduction

Autoimmune pancreatitis (AIP) and pancreatic cancer are top differentials of obstructive jaundice originating from the pancreas. Case Description/

Methods

The patient's findings were concerning for malignant biliary obstruction, but a thorough workup determined that the patient had AIP-NOS. She underwent EBS and was discharged on a steroid taper. Follow-up demonstrated complete resolution of symptoms, laboratory markers, and imaging.

Conclusion

Adequate pancreatic tissue is not always obtained with 22-gauge needles. Biliary stenting is justifiable in AIP with significant hyperbilirubinemia. It is important to consider AIP for with a pancreatic head mass and obstructive jaundice to optimize outcome.