Left mediastinal paraspinal mediastinal tumor 3.2cm is a mediastinal tumor, most mediastinal tumors are benign and a few are malignant. The common causes of mediastinal tumor are primary tumor and secondary tumor, such as thymoma, secondary mediastinal lymph node metastasis, etc. The cause should be clarified and then actively treated. There are mediastinal tumors next to the left mediastinal spine.3.2 There may be primary tumors, such as thymoma, dermoid cyst, teratoma, pericardial cyst, bronchial cyst, and neurogenic tumors, etc.; there may also be secondary tumors, most of them secondary to mediastinal lymph node metastasis, secondary to tumors in the lungs, esophagus, breast, and abdomen. Most mediastinal tumors are benign and have no obvious symptoms or mild symptoms clinically; a few are malignant, and patients may have symptoms such as chest tightness, dyspnea, dysphagia, and chest pain. Therefore, if you find a mediastinal tumor 3.2cm next to the left mediastinal spine, you should actively improve the relevant examination and get a clear diagnosis from the doctor, rather than diagnosing on your own based on a single result.