Endoscopic classification and pathological features of primary intestinal lymphangiectasia

Figure 4 Endoscopic images and corresponding histological findings of primary intestinal lymphangiectasia. A, E, I, and M: Four types of endoscopic images in patients with primary intestinal lymphangiectasia; B, F, J, and N: Hematoxylin and eosin stain showing the full mucosa of the small intestine; C, G, K, and O: Immunohistochemical stain shows that D2-40 positive cells are located in the cytoplasm and envelope of lymphatic epithelial cells and are brownish yellow (magnification: × 10), indicating dilated lymphatics; D, H, L, and P: CD34 stain showing normal vascular endothelial cells (magnification: × 10).