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Case of the Week 389

What is the most likely diagnosis?

  • 71 year-old male with right lower quadrant pain

Axial CT scan of upper abdomen

  1. Cirrhosis
  2. Liver lacerations
  3. Metastases from colon carcinoma
  4. Budd-Chiari syndrome
  5. Pseudomyxoma peritonei

Additional Image - Axial CT scan of pelvis



Additional Images


Axial CT scan of pelvis



5. Pseudomyxoma peritonei



More (Click Discussion Tab)

Pseudomyxoma peritonei

General Considerations

  • Diffuse collections of gelatinous material in the abdomen and pelvis and mucinous implants on the peritoneal surfaces
  • In almost all cases, it is from a ruptured mucinous tumor of the appendix
    • Spectrum from more benign to more malignant findings
  • Other causes may include tumors of the large and small bowel, lung, breast, pancreas, stomach, bile ducts, gallbladder, and fallopian tubes/ovary
  • More common in females
  • Results in mass effect on organs
    • Also known as “Jelly Belly



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is an award-winning educational website aimed primarily at medical students and radiology residents-in-training, containing  lectures, handouts, images, Cases of the Week, archives of cases, quizzes, flashcards of differential diagnoses and “most commons” lists, primarily in the areas of chest, GI, GU cardiac, bone and neuroradiology.