Multifocal pyogranulomas on serosa and throughout gut wall. Infiltration by mononuclear cells, [[Lymphocytes|lymphocytes]], plasma cells, [[Macrophages| macrophages]] and a few[[Neutrophils|neutrophils]]. [[Necrosis - Pathology|Necrosis]] and vasculitis will also be seen. | Multifocal pyogranulomas on serosa and throughout gut wall. Infiltration by mononuclear cells, [[Lymphocytes|lymphocytes]], plasma cells, [[Macrophages| macrophages]] and a few[[Neutrophils|neutrophils]]. [[Necrosis - Pathology|Necrosis]] and vasculitis will also be seen. |