Fig. 4From: Duplication of the appendix masquerading as appendiceal tumor: a case reportPathological findings of the appendix. A Macroscopic examination of the resected specimen revealed an enlarged appendix with two lumens (represented by two circles). B Microscopic findings confirmed appendix duplication, with bifurcation into two lumens within a thick serosal wall. Both lumens exhibited independent true mucosa and a muscular layerBack to article page