Acute Abdominal Inflammations Appendicitis an inflammatory lesion of the vermiform appendix, located near the ileocecal valve can be caused by occlusion of the lumen of the appendix by hardened feces (fecaliths), by foreign objects, or by kinking of the appendix may impair circulation and lower resistance to organisms such as bacilli or streptococci a small part of the appendix may be edematous or