Biomedical subjects
Publications and source records attributed to S Othmani.
On the basis of two personal cases and a review of the literature, we have attempted to define endoscopic and histologic features in gastric xanthelasma. The various etiopathogenic hypotheses published in the literature are reviewed and others are suggested. Attention is drawn to the differential diagnosis with mucus-secreting cell carcinoma. Use of stains for mucus in such lesions is recommended to confirm the diagnosis.
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It is still too soon to make a full assessment of the Chernobyl disaster, but one should be begun, and practical inferences, with particular reference to the prevention of radiation-induced cancers, may be drawn.
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On April 26, 1986, after partial fusion and confining loss by explosion of a nuclear reactor, 5 x 10(7) Ci of radionuclides escaped from Chernobyl. Three years later, maps show contamination by radioactive isotopes (formed during that period) of 21,000 km2 of Soviet soil, mainly in Byelorussia and part of the Ukraine. Decontamination measures have not been effective to date and 135,000 persons are being followed medically, taking into account the radioactive doses they received. An initial excess of morbidity from solid tumors has been noted much sooner than in the case of Hiroshima and Nagasaki, but its significance is in dispute. Three years later, only the extent of the ecologic disaster caused by the radioactive contamination can be confirmed. It is too early to draw conclusions about radiation-induced carcinogenesis for the contaminated population.
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