“…Precursor T-cell lymphoblastic lymphoma (T-LBL) is a rare type of malignant lymphoma ( 2 - 5 ), which has the characteristics of high invasion and proliferation with a very high degree of malignancy ( 4 , 5 ). In the early stage, the tumor will proliferate rapidly and invade extensively, compressing the heart, aorta, trachea, esophagus, and other organs ( 4 , 5 ), resulting in shock, acute dyspnea, and a series of emergencies, threatening the life of patients, and representing a difficult problem in clinical practice ( 1 , 3 , 5 - 8 ). Due to the wide variety of mediastinal tumors, especially lymphomas, accurate classification of tumors is the key to individualized precision therapy ( 1 , 9 ).…”