Figure 5a. Mucocele from mucinous adenoma in a 47-year-old man with nonspecific abdominal pain. (a) Axial CT scan shows an elongated cystic mass (M) in the expected region of the appendix. (b, c) Sagittal T2-weighted (b) and contrast-enhanced fat-suppressed T1-weighted (c) MR images show the same elongated cystic mass (M). (d) Photograph of the gross specimen shows fusiform dilatation of the appendix.