Ben-Gurion University of the Negev (BGU) researchers have found that babies born from mothers who underwent fertility treatments are at increased risk of developing many types of pediatric cancers and tumors (neoplasms). According to the American Cancer Society, the most common pediatric neoplasms are leukemia, brain and spinal cord tumors, neuroblastomas, Wilms tumors, and lymphoma, including both Hodgkin and non-Hodgkin.