liver cancer, AFP may appear, and with a relatively high density at that. RIA enjoys a sensitivity reaching 1 milligamma/millilitre,
therefore can greatly enhance the early-stage diagnosis rate of
This method the primary liver cancer (amounting to over 80%).
has been employed to conduct general surveys in liver-cancer- frequent areas. Among 190 000 persons of the said general survey, 300 cases of primary liver cancer have been detected, among whom
And the 134 cases are early-stage patients with no symptoms.
operational check indicates that RIA can detect the tumor with
the diameter reaching 0.5cm.
In the blood of those suffering from cancer of the alimentary
the CEA canal, or tumor and cancer in other parts of the boby,
usually indicates an obvious increase.
The statictical figures
show that the positive diagnosis rate of the various cancers
by means of RIA detecting CEA is:
cancer of pancreas (90%) >
and cancer of liver (77%) ▲ cancer of
cancer of colon (77%) stomach (66%) > cancer of esophagus (42%).
Besides, in clinical practice, the RIA for detecting CEA
can also act as effective means for many items of work, such as auxilliary diagnosis, predictive diagnosis, recurrence checking
and observation for curing effects.
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