Fig. 2

A 37-year-old woman was was admitted to our hospital because of dysphagia for 3 months. Her chest CT showed Irregular soft tissue density, homogeneous enhanced, mass was seen between the trachea and the esophagus. The boundary was not clear, and the trachea, left main bronchus and esophagus were under pressure. a-c. Ultrasound gastroscopy showed a hypoechoic mass could be seen in the mediastinum of the esophagus from the incisors 22–26 cm. A clear boundary, irregular edges were seen. The internal echo was still uniform, and no clear necrosis and calcification were seen. It could be seen that small blood vessels pass through the tumor, and the lesions are closely related to the pulmonary blood vessels by using Doppler. g This patient converse to thoracotomy because of intraoperative injury of the left main bronchus membrane, and the mass cannot be completely removed. Then she was diagnosed with Castleman disease of hyaline vascular variant in pathology. It was shown that the germinal centers typically form concentric rings, a phenomenon that is knownas “onion skinning”.(H Hematoxylin and eosin, × 200) After 1-year follow-up, chest CT showed no significant progression of the mass. During this period, the patient did not receive any adjuvant treatment (d-f)