Mucinous adenocarcinoma of the appendix and Pseudomyxoma Peritonei

Case contributed by Dr Anthony Nuñez


Patient present vague abdominal pain and weight loss. On ultrasound, there was a cystic lesion on the right lumbar quadrant.

Patient Data

Age: 75 years
Gender: Male

Axial non-contrast CT, shows a fluid-filled appendix with curvilinear calcifications associated with a loculated low-attenuation and laminar collection surrounding the anterior surface of the liver with mild mass effect which demonstrate a scalloped appearance. 

There is also soft-tissue implants along the omentum, diffuse omental nodularity and some hypodense lesions in the liver.


Percutanuos biopsy by CT

Percutaneous biopsy of the omental implant was consistent with adenocarcinoma. 

Case Discussion

Mucinous adenocarcinoma of the appendix must be suspected when there is a compromise of the peritoneum (mucinous deposits or soft-tissue implants). 

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Case information

rID: 68296
Published: 24th May 2019
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included
Institution: University Institute CEMIC

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