Costa, RSCosta, JMFerreira, AGonçalves, RRolanda, C2018-12-142018-12-142018-11-22Gastrointest Endosc. 2018 Nov 22. pii: S0016-5107(18)33293-0.http://hdl.handle.net/10400.23/1290engColonoscopiaAn uncommon diagnosis done by colonoscopyjournal article10.1016/j.gie.2018.11.022