“…Only few literature have reported the imaging appearance of primary esophageal sarcomatoid carcinoma before. 7,8 In this case, the esophageal sarcomatoid carcinoma represents a large soft tissue mass with high 18 F-FDG uptake on 18 F-FDG PET/CT. However, the 18 F-FDG PET/CT findings of esophageal sarcomatoid carcinoma are similar to part of esophageal squamous carcinoma, leiomyosarcoma, or neuroendocrine carcinoma, [10][11][12] which are difficult to distinguish.…”