Diagnosis and treatment of small intestinal bleeding: Retrospective analysis of 76 cases

Figure 4 Pathological and immunohistological examination of small intestinal bleeding caused by small intestinel stromal tumor. Arrangement of tumor cells in interlock weaving form with abundant cytoplasm, light staining, unclear borderline and diffused infiltration of chronic inflammatory cells but without necrosis and hemorrhage, karyokinesis could be seen (in the middle of A). Immunohistochemical findings were as follows: CD117 (+) (B), CD34 (-), S-100 (-), Vimentin (weak +) (HE × 200).