Carcinoid syndrome – Cardiology MCQ

Carcinoid syndrome is characterized by episodic flushes, abdominal pain, diarrhea etc due to a serotonin secreting carcinoid tumour. Wrong statement about carcinoid syndrome?
1. 5-HIAA (5-Hydroxyindoleacetic acid) level in urine is elevated
2. Left sided heart valves are commonly involved
3. Octreotide radiolabelled scan is useful in diagnosis
4. Indicates hepatic metastasis
Correct Answer