Fig. 2

Endoscopy with EUS results before and after anti-tuberculosis treatment. A Endoscopy showed a protuberance with rough surface before ATT. B EUS revealed the layer structure of esophageal wall disappeared over the protuberance, instead of which was a hypoechoic structure (long arrow) spreading to the adventitia. A round-like hypoechoic nodule (arrowhead) could be seen at the back, and the boundary between it and the esophageal mass was not clear. C After ATT the follow-up gastroesophageal endoscopy showed a black sunken lesion with elevated peripheral mucosa replaced the original tuberculous mass. D EUS revealed a hypoechoic nodular structure (short arrow), where the layers of esophageal wall were disappeared. The measured size of mass was smaller than (B)