Mucocele of the appendix: An unusual cause of lower abdominal pain in a patient with ulcerative colitis-. A case report and review of literature

Figure 1 Manifestations of appendiceal mucocele. A: Peculiar internal echogenicity of onion skin design, occupying a part of the cavity in appendiceal mucocele; B: Presence of a pericaecal 11 cm×3.5 cm cystic lesion in the right lower abdomen (arrows) shown by axial CT.