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  • Title: [A study of growth and malignancy grading of stomach and colorectal cancers by serial serum carcinoembryonic antigen levels analysis].
    Author: Umehara Y, Miyahara T, Yoshida M, Isobe S, Oba N, Harada Y.
    Journal: Nihon Geka Gakkai Zasshi; 1990 Jun; 91(6):661-6. PubMed ID: 2398857.
    Abstract:
    Changes in serum CEA levels were analyzed on a time-course basis in 33 patients with stomach cancer and 20 patients with colorectal cancer. A linear relationship between log CEA and time could be evaluated and individual CEA doubling time (CEA D.T.) was calculated. The results obtained are as follows. 1) The CEA D.T. was not constant from the onset of the disease to death in stomach cancer and colorectal cancer. 2) The CEA D.T. was distributed widely with 5 to 140 days in stomach cancer and 8 to 134 days in colorectal cancer. It tended to be shortened at the terminal stage in both tumors. 3) In terms of age, sex and histology, the CEA D.T. tended to be short in the young, female and poorly differentiated cancer. These background appeared to have an influence on the growth of tumor. 4) The CEA D.T. was well correlated with the period of survival of the patients with gastric cancer (r = 0.636, p less than 0.001). The analysis of serial CEA levels on a time-course basis is considered useful in studying the relationship between tumor-bearing hosts and malignancy of the tumor.
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