AIM:Toidentifythosewithamicropapillarypattern,ascertainrelativefrequencyanddocumentclinicopathologicalcharacteristicsbyreviewinggastriccarcinomas.METHODS:Onehundredandfifty-onepatientsdiagnosedwithgastriccancerwhounderwentgastrectomywereretrospectivelystudiedandthepresenceofaregionalinvasivemicropapillarycomponentwasevaluatedbylightmicroscopy.Allavailablehematoxylin-eosin(HE)-stainedslideswerehistologicallyreviewedand5tumorswereselectedasp...