Jejunal cavernous lymphangioma manifested as gastrointestinal bleeding with hypogammaglobulinemia in adult: A case report and literature review

Figure 2 Microscopic features of the resected tumor. A: Morphology showed variably sized cysts in mucosal lamina propria and submucosa, the lumen was filled with lymphatic fluid, and contained RBCs and lymphocytes (hematoxylin–eosin staining, 60×); B–D: Dilated cysts lined by a singer layer of flattened cells and immunohistochemical staining were positive for D2-40 (B) and CD31 (C), and negative for CD34 (D) (60×).