The method of radiological examination to diagnose the early cancer of the colon is the preparation by Brown's method, the injection of " Coliopan " (antispasmolytic remedy) before the radiological examination and the double contrast method with Barium of 65% (w/v).
The macroscopic findings of the early cancer of the colon are limited in the prominent lesions. Therefore, it must be very important to find out these lesions.
The colonoscpy is not so convenient for the routine examination of the colon, and in the radiological examination even small polyps must not be overlooked.
Now in Japan, the methods for finding out the early cancer of the colon are almost perfect.
On the other hand, the complaints of the patients with the early cancer of the colon are still unknown or may be rather none. Those problems are now very important.
In the radiological examination of the so-called "Colon Syndrom" (by Prof. T. Hayashida), the cases with the small "simulating" early cancer of the colon with histological evidence of no metastasis of lymph nodes are demonstrated.