BackgroundThe role of maternal exposures and conditions in the origin of childhood cancer has been a subject of growing interest, but current evidence is inconclusive.Case presentationWe present a case detected in a multicenter case–control study evaluating the association between parental risk factors and childhood acute lymphoblastic leukemia (ALL). The patient is a Colombian girl who was diagnosed with ALL-L1 when she was 2 years old. Her mother had been diagnosed with antiphospholipid syndrome before pregnancy and had also been treated with subcutaneous injections of heparin. Other potentially relevant maternal and patient exposures are also reported in this paper.ConclusionWe hypothesize that the maternal autoimmune disease could be a contributor in the causality network of the daughter’s leukemia. However, the role of other exposures cannot be excluded.

MPNSTs are important despite their low incidence because of their aggressiveness, and should be considered upon the detection of a mass located at paravertebral level or limbs, especially in patients with NF1. The cornerstone of the treatment lies in a complete surgical resection due to the high rate of recurrence, with limited therapeutic response to radiotherapy and chemotherapy. This case presents the clinical manifestations and complications that can be expected with these tumors and their harmful behaviour. The absence of NF1 does not exclude the diagnosis.

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