Abstract
It is already known the gastric biopsy is important for diagnosis of early gastric cancer, especially of minute ont. We experienced 39 cases with 47 lesions of early gastric cancer less than 10mm in diameter. But there were 9 overlooked cases and 2 false negative cases. Therefore, more careful examination including biopsy should be performed. At this time, 342 cases with 374 lesions of early gastric cancer were experienced. Detectabilty of early cancer by biopsy specimens was studied. Relationship between macroscopic calssification and detection rate of early gastric cancer by biopsy was focused. Consequently, the detection rate of type IIa was the highest (92.3%). Following ha, came type I (75.7%) and type IIa+IIc (75.2%). There was a tendency that detection rate of protrudent type was higher than that of depressed type. The detectabilty of cancer in relation to its size was studied. We devided the size into following calsses; less than 10mm in diameter, 11 to 20mm, 21 to 30mm, 31 to 40mm, 41 to 50mm, 51 to 60mm and more than 60mm. The lesions with the size of 21 to 30mm gave the highest detection rate by biopsy. But difference from other groups were not significant. There is no correlation between the size of cancer and detectability of cancer by biopsy. Although every examiner knows the necessity of careful endoscopic examination and cautious biopsy, we have to point out this faxt again.
