Determining when endoscopic ultrasound changes management for patients with pancreatic cystic neoplasms

Abstract

Introduction: Pancreatic cystic neoplasms (PCNs) are being incidentally detected at an increased rate due to increased CT and MRI usage. EUS is an emerging tool that can differentiate between benign and malignant features of pancreatic cysts. We hoped to identify the specific cross-sectional imaging findings and patient characteristics that warrant EUS referral.

Methods: We conducted a retrospective case-control chart review, evaluating patients, who were diagnosed with pancreatic cysts and underwent EUS between January 1, 2010 and December 31, 2017.

Results: EUS was found to change management when CT imaging found cyst size > 4 cm (OR = 4.07, p < 0.01), cyst size > 3 cm (OR = 3.79, p < 0.001) and associated solid component to the cyst (OR = 5.95, p < 0.01). Additionally, patient characteristics, including age less than 50 years, male sex and 10-pack year smoking history were significantly associated with EUS change in management.

Discussion: Our findings suggest that EUS referral should be coordinated based on the findings of specific HRFs, with support from high risk patient characteristics, rather than the accumulation of multiple HRFs, as suggested by existing guidelines.

Keywords: Endoscopic ultrasound; Gastroenterology; General surgery; Pancreatic cancer; Pancreatic cysts.