Make the Diagnosis: Fitful Flushing

(MedPage Today) — Case Findings: A 60-year-old woman presents with an 8-month history of colicky abdominal pain, diarrhea, and occasional flushing on her face and chest. She suffers from bilateral wheezing and a distended, non-tender abdomen. In addition, her 5- hydroxyindoleacetic acid (5-HIAA) levels are elevated, and a CT scan showed a hypervascular plaque-like mass in the terminal ileum with soft-tissue spokes radiating into the mesenteric fat.

Which neurotransmitter is responsible for this patient’s symptoms, associated with a type of tumor?

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