Pseudomyxoma Peritonei Originating from an Intestinal Duplication

Figure 2

Intestinal duplication. The cyst wall clearly shows the concentric layering of a normal bowel wall. The tunica muscularis consists of two discrete smooth muscle layers with an intervening myenteric nerve plexus (upper inset). A submucosa and mucosa are also recognized. The mucosa displays a diffuse low-grade villous adenoma (lower inset).