Utility of rapid onsite evaluation of touch imprint cytology from endoscopic and cholangioscopic forceps biopsy sampling (with video).

BACKGROUND AND AIMS: Rapid onsite evaluation of touch imprint cytology (ROSE-TIC) is a simple and rapid method used for the diagnosis of benign and malignant lesions. We evaluated the diagnostic accuracy of ROSE-TIC for advanced intestinal luminal and indeterminate pancreatobiliary lesions during endoscopy. METHODS: This is a retrospective descriptive study of patients who underwent endoscopy or ERCP between January 1, 2014 and December 31, 2016. It included patients who were referred for the treatment of intestinal luminal lesions or evaluation of indeterminate pancreatobiliary lesions. The slides were prepared by gently touching the specimen onto a glass slide and were examined under the microscope. The main outcome measure was to determine the diagnostic accuracy of ROSE-TIC by comparing the onsite cytology findings with the corresponding off-site histologic diagnosis. RESULTS: All 222 patients (106 pancreatobiliary and 116 GI lesions) had a prior benign diagnosis of intestinal luminal lesions or indeterminate diagnosis of pancreatobiliary lesions. The overall sensitivity, specificity, positive predictive value, negative predictive value, and diagnostic accuracy of ROSE-TIC were 97%, 85%, 83%, 97.2%, and 90%, respectively. The accuracy varied with the site of the biopsy sample. The accuracy was lowest for upper GI tract, where it was 85.2% but was 95% for lower GI tract lesions. CONCLUSIONS: By establishing a rapid onsite diagnosis, ROSE-TIC expedites decision-making on patient management. Prospective studies are needed to confirm these preliminary findings.

Endoscopic ultrasound-guided drainage of pancreatic fluid collections in children.

BACKGROUND AND OBJECTIVE: Although endoscopic ultrasound (EUS)-guided drainage of pancreatic fluid collections (PFCs) has evolved as the standard of care in adults, its role as a single-step drainage modality in children is unclear. The aim of the present study was to evaluate the efficacy and safety of single-step EUS-guided drainage of PFCs in children. METHODS: This is a retrospective study of all of the children who underwent single-step EUS-guided drainage of PFCs during a 4-year period at 1 institution. An endoscopic retrograde cholangiopancreatography was attempted before EUS-guided drainage to evaluate the pancreatic duct and bridge any ductal disruption. RESULTS: A total of 7 children (4 boys; mean age 8.4 years [standard deviation 2.1]) underwent EUS-guided drainage of PFCs. The etiology was blunt abdominal trauma in 5, hereditary pancreatitis in 1, and idiopathic pancreatitis in 1. Both technical and treatment success rates were 100% with median procedural duration of 12 minutes (interquartile range 12-20 minutes). Two patients underwent repeat EUS-guided drainage due to lack of adequate resolution of PFC on follow-up computed tomography. There were no immediate or delayed complications. At a median follow-up of 1033 days (interquartile range 193-1167 days), all of the children were doing well with no PFC recurrence. CONCLUSIONS: Single-step EUS-guided drainage of PFC in children is technically feasible, safe, clinically effective, and when available, should be the first-line treatment modality.