Fig. 1
From: Removal of tumor thrombus from the azygos vein in an esophageal squamous cell carcinoma patient
ESCC was diagnosed by CT and gastroscopy. a Chest enhanced CT before chemotherapy showed thicken walls of the middle esophagus with tumor thrombus in the arch of azygos vein. b Gastroscopic examination showed irregular protuberance in the esophageal lumen, and its surface remained anabrotic, and the tumor basically blocked the esophageal lumen. c Chest enhanced CT after neoadjuvant chemotherapy showed a significant reduction in the esophageal tumor and tumor thrombus at the arch of azygos vein