Hi. Recently, on the TV I heard a talk about new chances
of detecting certain cancers. The interviewers were wondering whether blood
tests could help in the detection of cancer.
Morphology is one of the most basic and most
frequently performed tests. According to researchers at the University of
California at San Diego, this simple test can detect the cancer and determine
where the tumor cells grow. Many cancers, especially in the advanced stage,
cause anemia. For example macrocythemic anemia can signal gastric cancer.
It turned out
that in every cancer patient not only cancer cells circulate in blood, but also
in this blood circulates ‘cell-free DNA’ that comes from cancer cells. This
free DNA is different from the DNA from healthy cells. However, the possibility
of its detection is greater with the increasing number of these cells. So, it complicates the situation because it indicates an advanced stage of the disease. It is
very hard to detect cancer when these cells are scarce.
This is
probably a step forward, but unfortunately, we can not call this a
breakthrough. I hope it will come soon.