PMC3879997_01
Axial short T1 inverted recovery sequences (a) shows a regular appendiceal fluid-filled mass. On T2-weighted sequences the mass is hyperintense (b, coronal view and d, sagittal view) and on T1-weighted sequences hypointense (c, sagittal view). The mesentery is edematic (c and d, white arrows), the base of the mucocele is indistinguishable from the appendix (c and d, *) and the mucocele is surrounded by fluid (a, white arrow) indicative of reactive inflammation and torsion.
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F1
Abrupt tapering of the appendix was seen at the base of the mucocele (Figure  1).
Laparoscopic view of the appendiceal mucosele (a). A clockwise 720 degree torsion can be seen at the base of the mucocele (b). The appendix was gangrenous and hemorrhagic.
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F2
A distended and necrotic appendix was observed with a 720 degree clockwise torsion of its base (Figure  2).
Removed appendix (a) displaying the mucous content (b).
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F3
The appendix was cut open and a yellow gel-like content was observed (Figure  3).