RADIOLOGY: GASTROINTESTINAL: GI: Case# 60: APPENDICITIS, HIV, PAIN. 28 year old male, HIV positive, who presents with right lower quadrant pain. There is mild thickening of the appendix which measures approximately 10 mm in its diameter. The CT findings of appendicitis include circumferential thickening of the appendiceal wall, infiltrative changes within the periappendiceal fat, pericecal/periappendiceal phlegmon, and appendicolith. The number of CT findings relates to the severity and progression of the disease.