title: Classification of human breast cysts according to electrolyte and androgen conjugate composition.
abstract: One hundred human breast cyst fluids have been analysed for sodium (Na+), potassium (K+) and dehydroepiandrosterone (DHA) sulphate. Concentrations varied greatly between individual cyst fluids, Na+ from 20 to 185 mmol/l, K+ from 5 to 160 mmol/l and DHA-sulphate from 1.5 to 87 mumol/l. Analysis of the inter-relationships between Na+, K+ and DHA sulphate revealed two major sub-populations of cyst fluids--one group in which Na+ levels were markedly in excess of K+ and DHA sulphate concentrations were low and the other in which K+ was the predominant cation and DHA sulphate concentrations were high.
mesh_terms: D000728:Androgens / Q000032:analysis*; D001707:Biopsy, Needle; D003687:Dehydroepiandrosterone / Q000031:analogs & derivatives / Q000032:analysis; D019314:Dehydroepiandrosterone Sulfate; D004573:Electrolytes / Q000032:analysis*; D005260:Female; D005348:Fibrocystic Breast Disease / Q000032:analysis / Q000145:classification*; D006801:Humans; D010783:Photometry; D011188:Potassium / Q000032:analysis; D011863:Radioimmunoassay; D012964:Sodium / Q000032:analysis
chemical_list: D000728:Androgens; D004573:Electrolytes; D003687:Dehydroepiandrosterone; D019314:Dehydroepiandrosterone Sulfate; D012964:Sodium; D011188:Potassium