<prompt> Charcteristic pathological finding in carcinoid hea disease is:Fibrous endocardial thickening of Right ventricle, Tricuspid valve Pulmonary valveEndocardial thickening of Tricuspid valve with severe Tricuspid StenosisCollagen rich, elastic deposits in endocardium of right ventricle and Pulmonary valveCalcification of Tricuspid and Pulmonary valve  <response>: When there is cardiac involvement of the carcinoid syndrome it can lead to endocardial fibrosis mainly right ventricle, pulmonic and tricuspid valve thickening. Ref: Robbins Basic Pathology, 7th Edition, Page 587; Harrisons Principles of Internal Medicine, 16th Edition, Page 1413. 