During our studies on breast diseases, the following biochemical value
s were measured: chlorine, sodium, potassium and albumin. We examined
153 syringe biopsies from women aged between 34 and 55 years, and an a
nalysis of the above mentioned parameters enabled us to classify the b
reast cyst fluid into 2 groups: group I was definitely benign, while g
roup II was calculated as having a risk factor two to four times great
er than the control group in developing breast cancer.