Omental cake

Last revised by Tee Yu Jin on 26 Mar 2023

Omental cake refers to infiltration of the omental fat by material of soft-tissue density. The appearances refer to the contiguous omental mass simulating the top of a cake. Masses on the peritoneal surfaces and malignant ascites may also be present. 

Pathology

The most common cause is metastases from ovarian, gastric, or colon cancer. A core biopsy may be helpful if the primary tumor is unknown.

Differential diagnosis

Cases and figures

  • Case 1
  •  Case 2
  • Case 3
  • Case 4: PET-CT
  • Case 5

Imaging differential diagnosis

  • Tuberculous peritonitis
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