Incidental Diagnosis of Carcinoid Disease by Intraoperative Transesophageal Echocardiography and Subsequent Discovery of a Neuroendocrine Tumor during Cardiac Surgery

Graphical abstract
Highlights • Carcinoid heart disease typically involves the right-sided valves of the heart. • Carcinoid valves are fixed and retracted with limited mobility. • Pathognomonic appearance of valves increases carcinoid likelihood. • Carcinoid diagnosis has intraoperative implications.