“…As in the current case, diagnosis by imaging is difficult; however, the pathological and biochemical findings of the cyst aspirate are highly diagnostic [2,3]. Complications after EUS-FNA of pancreatic cystic lesions are infrequent (2 % -5 %) [1], but do include serious problems such as hemosuccus pancreaticus, pancreatic ascites [4], tumor seeding [5], and, as in this case, chemical peritonitis.…”