1. A173 RECOGNIZING RARE PRESENTATIONS OF POLYPOSIS SYNDROMES AND THEIR ASSOCIATED MALIGNANCIES IN PEDIATRIC PATIENTS. (26th February 2020) Authors: Reitzel, N E; Sherlock, M; Zachos, M; Arredondo, J; Ratcliffe, E Journal: Journal of the Canadian Association of Gastroenterology Issue: Volume 3:Supplement 1(2020) Page Start: 38 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗