Contrast-enhanced pelvic computed tomography. The scan reveals one 2.1 × 1.6 cm irregular-shaped cystic mass (arrow) with marginal enhancement in the right pelvic cavity, abutting the swollen appendix (arrowhead). The tumor is located at the tip of appendix with possible subserosa invasion and attaches to the right pelvic side wall. The scan also shows inflammatory change with regional ileal bowel loop adhesion to the mass. Some fluid collection around the tumor-bowel complex is noted