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Cardiology3 papers

Vipoma, malignant

Last edited: 4/23/2026

Overview

Vipoma, a rare neuroendocrine tumor of the pancreas, primarily secretes vasoactive intestinal polypeptide (VIP), leading to characteristic symptoms including watery diarrhea, hypokalemia, and achlorhydria (WDHA syndrome). 1

Diagnosis

  • Clinical Presentation: Watery diarrhea (fecal volumes 0.16 to 1.24 L/day), hypokalemia, achlorhydria.
  • Laboratory Tests: Elevated plasma VIP levels.
  • Imaging: CT or MRI to locate pancreatic tumor.
  • Endoscopy: May be used to assess extent and complications.

    • Management

  • First-Line Treatment: Prednisone to control diarrhea; associated with decreased plasma VIP levels. 1
  • Surgical Intervention: Tumor resection; critical to monitor for post-operative circulatory changes including potential hypertension and heart failure. 1
  • Fluid and Electrolyte Management: Careful monitoring and correction to avoid exacerbating fluid loss. 1

    • Special Populations

  • Comorbidities: Close monitoring of circulatory parameters post-surgery is crucial, especially in patients with pre-existing cardiovascular conditions due to potential severe hypertension and hypotension. 1

    • Key Recommendations

  • Initiate prednisone for symptom control in vipoma patients with elevated VIP levels and WDHA syndrome (Evidence: Moderate) 1
  • Perform surgical resection of the vipoma when feasible, with vigilant hemodynamic monitoring pre- and post-operatively to manage potential severe circulatory disturbances (Evidence: Expert opinion) 1
  • Implement meticulous fluid and electrolyte management strategies to prevent exacerbation of electrolyte imbalances during treatment (Evidence: Weak) 1

    • References

    1 Barraclough MA, Bloom SR. Vipoma of the pancreas: observations on the diarhrhea and circulatory disturbances. Archives of internal medicine 1979. link

    Original source

    1. [1]
      Vipoma of the pancreas: observations on the diarhrhea and circulatory disturbances. — Barraclough MA, Bloom SR Archives of internal medicine (1979)
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