What is esophageal ultrasound endoscopy

Esophageal Ultrasound Endoscopy (EUS for short) is an advanced medical device that integrates ultrasound and endoscopy. It places a miniature high-frequency ultrasound probe at the front end of the endoscope, and when the endoscope enters the gastric lumen, real-time ultrasound scanning can be performed at the same time as the endoscope observes the morphology of the lumen directly in order to obtain the histological characteristics of the pipe wall at all levels and the ultrasound images of the surrounding neighboring organs

The EUS's The main advantages are to determine the nature of gastrointestinal submucosal lesions, to determine the depth and extent of invasion of malignant tumors in the digestive tract, and to diagnose diseases of the pancreatic system. Ultrasound endoscopy differs from ordinary gastroscopy in that ultrasound endoscopy has an additional ultrasound probe at the front end, and this small probe is sent into the gastric lumen with the gastroscope for ultrasound detection, which allows visualization of lesions in the deeper layers of the esophagus and stomach. Therefore, ultrasound endoscopy has excellent diagnostic and therapeutic value for augmented lesions of the esophagus and stomach. In addition, ultrasound endoscopy has other uses, such as ultrasound endoscopy can help doctors determine the depth of invasion of gastric cancer and metastasis of surrounding lymph nodes, and can identify whether gastric ulcers are benign or malignant.

It's the same as the gastroscopy route. I've never done it, but it feels like it should be similar to doing a gastroscopy.