Carcinoid tumor is diagnosed by.: (A) Urinary 5 HIAA, (B) Chromogranin A, (C) Neuron specific enolase, (D) Urinary 5 Hydroxy tryphtophan
Answer is A. Ans. (a) Urinary 5HIAARef: Bailey 27th edition, Page 1251* Most common used investigation to diagnose carcinoid tumor is 24 hours urinary 5HIAA* IOC to localize the tumor is DOTATATE scan