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Case of the Week 355




What's the most likely diagnosis?

  • 50 year-old male with abdominal pain, diarrhea



Contrast-enhanced coronal CT image of the abdomen

  1. Hernia
  2. Pheochromocytoma
  3. Appendicitis
  4. Large bowel obstruction
  5. Carcinoid tumor

Additional Image - Contrast enhanced CT image of the abdomen

 

Additional Image

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Contrast enhanced axial CT image of the abdomen

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Answer:

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5. Carcinoid Tumor of the Small Bowel

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More (Click Discussion Tab)


Carcinoid Tumor of the Small Bowel

Submitted by Theresa Kaufman, MSIV

General Considerations

  • Rare, potentially malignant, neuroendocrine tumor of primitive stem cells in gut wall which have hormone-secreting potential
    • Arise from enterochromaffin cells of Kulchitsky
  • Male predominance
  • ~50% of carcinoids occur in appendix; ~33% occur in small bowel
  • Most common primary tumor of the small bowel
  • Most appendiceal carcinoids are benign

    More ...


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