abnormal parahippocampal gyrus morphology abnormal entorhinal cortex morphology abnormal entorhinal area morphology abnormal Brodmann's area 28 morphology MP:0006300 MPheno.ontology any structural anomaly of the structure in the anterior parahippocampus that lies forward of the parahippocampal cortex and immediately medial to the perirhinal cortex, bounded superiorly by the hippocampus and inferiorly by the collateral sulcus