“…18 F-FDG PET/CT findings of esophageal carcinosarcoma have rarely been reported before. Esophageal carcinosarcoma also shows a hypermetabolic mass with SUV max ranging from 3.2 to 13.9 2,3,15 . For this case, it should be differentiated from squamous cell carcinoma, neuroendocrine tumor, melanoma, malignant fibrous histiocytoma, sarcoma, and other rare malignant tumor 4 .…”