<prompt> Lymphoid malignancy arising from thymic cells areFollicular lymphomaDiffure large B-cell lymphomaBurkitt lymphomaPre-Tcell All  <response>: About 85 are B -ALLs, which typically manifest as childhood acute leukemia.Less common T - ALLs tend to present in adolescent males or thymic lymphomas.These thymic lymphomas causes compression of large vessels and airway in the mediastinum. 