RESUMEN
B-lymphoblastic lymphoma is more slow-growing than T-LL and can be found in the skin, bone, or lymph nodes. Lymphoblastic lymphoma can be spread all over the body parts, including the brain and spinal cord (cerebrospinal fluid), in a male to the testes. It is a type of non-Hodgkin lymphoma (NHL). Children are most affected by lymphoblastic lymphoma and about 35% of all NHLs in children. Here, we report a 2-year and 6-month-old male child was brought with complaints of swelling in the right testicular region in the last 6 days. The patient was alright 6 months back when he developed swelling in the temporal region, sudden in onset and not associated with pain. The further clinical investigation with hematological and radiological aids confirmed a final diagnosis of non-Hodgkin B cell lymphoblastic lymphoma.