Abstract
We reported two cases of endoscopically confirmed paraileocecal abcess in which pus was found to drain to the colonic lumen. The first patient was a 78 year old man who presented with abdominal mass of the right lower quadrant. The imaging studies showed abdominal mass in the ileocecal region. The endoscpic examination revealed tumor-like protrusion of the cecal mucosa and pus was leaked from the biopsy site. He was diagnosed as paracecal abcess due to appendicitis by operative and pathological findings. The second patient was a 42 year old man who was admitted for pain in the right lower quadrant of the abdomen. The imaging procedures showed mass close to the ascending colon. The endoscopic examination revealed a protruded lesion just above the ileocecal valve and pus was draining spontaneously from the small opening of the tip of the m lesion. The diagnosis of paracolic abcess due to perforation of the diverticulum was confirmed by operative and pathological findings. We are sure that the endoscopic findings described as above are exceptionally rare and significant.