Biomedical subjects
Publications and source records attributed to S L Ngu.
It is not always possible to differentiate invasive pituitary adenoma from the other parasellar tumours. A case of an invasive pituitary adenoma mimicking a meningioma is reported. The importance of a correct pre-operative diagnosis is emphasized.
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With an ageing population in Australia, one would expect the probability of treating cancer patients who have a cardiac pacemaker to increase. In this paper the effect of ionizing radiation and electromagnetic interference on pacemaker function is discussed. A case of a cancer patient, with pacemaker, treated with radiotherapy without ill effect, is described. Concurrently, four pacemakers were tested in vitro with gamma radiation from a 60 Cobalt machine and no adverse effect was found. A list of precautions is recommended.
Management of breast cancer during pregnancy is complicated by the high risks of abortion and foetal malformation from the use of radiotherapy and chemotherapy. A case of breast cancer during pregnancy, treated with radiotherapy, and the estimated foetal dose is reported.