<prompt> Which of the following is true about carcinoid tumor?Occurs along structures derived from foregutPresentation is hypeension and diaphoresisIntestinal carcinoids are of high malignant potentialBest diagnosed by elevated urinary vanillymandelic acid levels  <response>: Mc site for Carcinoid tumor GI tractLungs Bronchus Option B Presentation is hypeension diaphoresis it is not True because presentation of Carcinoid tumor is usually secretory diarrhea Option D Best Dx by elevated urinary Vanillylmandelic Acid levels. No, it is done for Neuroblastomas 