Gross body composition studies done on a group of 11 women with cervical cancer before and after completion of radiotherapy revealed moderate compositional changes. There was after irradiation a tendency towards weight loss, connected with some increase of relative total body water content and also of its extracellular fraction. The weight loss was due to a decrease of body fat and cell mass, whereas extracellular spaces tended to increase. There was a tendency towards a drop in plasma sodium concentration and an increase of its total content in extracellular water. A significant drop of the potassium serum concentration was observed.
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