Mass formation in tracheal space

Mediastinal tumor, the mediastinum is located between the two lungs, with the sternum and thoracic vertebra as its front and back. There are many important organs, including large blood vessels, trachea, main bronchus, pericardium, esophagus, thymus and a large amount of fat, nerves and lymphatics. Due to the abnormal development of the congenital development or acquired cysts or tumors, it becomes a mediastinal tumor. There are many types of tumors in the mediastinum, including primary and metastatic ones. The benign tumors are more common in primary tumors, but a considerable part are malignant. In order to mark the location of the lesion on the mediastinum, the mediastinum can be divided into several parts. The level of the sternum and the lower edge of the 4th thoracic vertebra is divided into upper and lower parts. The mediastinal space containing many important organs is called "internal organ mediastinum" (middle Mediastinum), the space between the right trachea and the pericardium is the anterior mediastinum; behind the trachea and the pericardium (including the esophagus and the paraspinal mediastinum) is called the posterior mediastinum. According to domestic statistics, the incidence of mediastinal tumors is neurogenic tumors. Position, followed by teratoids, thymic tumors, and thyroid tumors, with the fewest cystic tumors.

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