NUTM1 and spindle cell sarcoma: There are still many rare LC pathological types in children, which are not listed in Table 3, such as: primitive neuroectodermal tumor, fibromyxosarcoma, malignant teratoma, malignant hemangioendothelioma, neuroblastoma, nuclear protein in testis (NUT) associated carcinoma, lymphoepithelial carcinoma, desmoplastic small round cell tumor, pseudosarcomatous carcinoma, spindle cell sarcoma.