Figure 2.

Positive pathological manifestations in the surgically resected segment. A: The ulcer in the ileocecal lesion encroached the whole segment with ectasia and blood vessel hyperplasia [hematoxylin and eosin (HE), × 40]; B: Ectasis in blood vessels was observed in normal tissues around the lesion (HE, × 40); C: The thickened vessel intima with lymphocyte and polymorphonuclear leukocyte infiltration (HE, × 40); D: Extreme ectasia in lesion blood vessels (HE, × 40); E: There was considerable lymphocyte infiltration in and around the vessel wall (HE, × 200); F: Thrombus and recanalization in some vessels at the base of the ulcer (HE, × 100).