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Biomedical subjects

A M Stewart

Publications and source records attributed to A M Stewart.

At least 91 records · Page 5Linked to original sources
PubMed1973

Group characteristics of children with cerebral and spinal cord tumours.

A study of 2072 children who developed cerebral or spinal cord tumours of varying degrees of malignancy before 15 years of age has shown that there is equally good representation of fatal and non-fatal cases in official registrations. Attack rates are higher for boys than girls and the prognosis is better for girls than boys. The risk of an early death is negatively correlated with age at diagnosis, and the risk of a late death shows the opposite relationship. These observations and a relatively high incidence of hindbrain tumours are suggestive of an embryonic origin for most of the cases.

Adolescent↗
PubMed1973

Cancer as a cause of abortions and stillbirths: the effect of these early deaths on the recognition of radiogenic leukaemias.

Data from the Oxford Survey have shown that childhood cancers are causes of in utero deaths which affect leukaemias more than solid tumours and difficult deliveries more than easy ones. As a result of these biases singletons give the impression of being more leukaemia-sensitive than twins. This is a false impression which affects other situations and makes it more difficult to detect the leukaemogenic effects of obstetric radiography in a prospective survey than in a case-history survey, and essential to look for these effects beyond the period affected by the in utero deaths.

Abortion, Spontaneous↗