mediastinum是什么意思，mediastinum翻译

mediastinum是什么意思，mediastinum翻译

Mediastinum

The mediastinum is a term used to describe the area in the middle of the chest, between the two lungs. It is an anatomical region that contains various structures, including the heart, great vessels, thymus, and other tissues. The mediastinum is divided into three main parts: anterior, middle, and posterior mediastinum.

The anterior mediastinum is located in front of the pericardium, the sac that surrounds the heart. It contains fat, connective tissue, and lymph nodes. The middle mediastinum is the largest part of the mediastinum and contains the heart, great vessels, and thymus. The posterior mediastinum is located behind the pericardium and contains the esophagus, aorta, and other structures.

The mediastinum plays a vital role in the function of the heart and lungs. It provides protection and support for the heart and great vessels, and it also contains nerves and lymph nodes that are involved in the immune response. The mediastinum is also a key area for the spread of diseases, such as cancer, which can affect the structures within it.

Diseases of the mediastinum can be caused by various factors, including infection, trauma, and cancer. Some common conditions that affect the mediastinum include mediastinitis, a bacterial or fungal infection of the mediastinum, and mediastinal tumors, which can be malignant or benign. Other conditions that can affect the mediastinum include thymoma, a tumor of the thymus, and esophageal cancer, which can spread to the mediastinum.

Diagnosis of diseases of the mediastinum typically involves a combination of physical examination, imaging studies, and laboratory tests. Imaging studies, such as chest X