The causal mechanism in carcinoid syndrome is due to
Carcinoid syndrome develops (in 10% of carcinoid tumours) due to release of 5-HT (serotonin), kinins, prostaglandins, histamine and indoles causing flushing, diarrhoea, cyanosis, asthmatic attacks, hepatomegaly, cardiac lesion on right side.. Reference : page 878 SRB's manual of surgery 5th edition
Erythropoietin and immunoglobulin
Serotonin and bradykinin
Insulin and insulin like substances
ACTH and ACTH like substances
Urology