title: Ultrasound examinations in pregnancy and childhood cancer.
abstract: Analysis of information obtained in an inter-regional epidemiological study by interviewing the parents of 555 children with malignancy diagnosed between 1980 to 1983 and the parents of 1110 control children did not reveal any significant association between exposure to ultrasound examination in pregnancy and risk of childhood cancer.
mesh_terms: D002493:Central Nervous System Diseases / Q000209:etiology; D002675:Child, Preschool; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007945:Leukemia, Lymphoid / Q000209:etiology; D009369:Neoplasms / Q000209:etiology*; D011247:Pregnancy; D011297:Prenatal Exposure Delayed Effects; D012306:Risk; D014463:Ultrasonography / Q000009:adverse effects*