Korean J Gastroenterol.
1999 Feb;33(2):183-193.
Proper Muscle Gastri c Cancer as Transitional State from Early Gastric Cancer to Advanced Gastri c Cancer
Abstract
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BACKGROUND/AIMS: Proper muscle (PM) gastric cancer could be considered as an intermediate stage between early gastric cancer (EGC) and advanced gastric cancer (AGC) in the aspect of invasion depth, diagnostic accuracy, prognosis and macroscopic features. We investigate the characteristics of PM cancer, especially endoscopic findings.
METHODS
We analyzed the endoscopic and pathologic characteristics of PM cancer in 62 cases among 381 cases of AGC from January, 1992 through De-cember, 1993 at Seoul National University Hospital.
RESULTS
The incidence of PM cancer was 16.1%. The mean size of PM cancer was 4.1 cm. It was smaller than that of non-PM cancer (0.7 cm). The diagnostic accuracy of endoscopy in PM cancer was 64.5%, which was lower than that in non-PM cancer (90.6%). AGC simulating EGC of PM cancer was 17.7% in endoscopic finding and 16.1% in pathologic finding. That of non-PM cancer was 5.5% in endoscopic finding and 2.2% in pathologic finding. Lymph node (LN) metastasis was positive in 40.3% of PM cancer and 79.3% of non-PM cancer.
CONCLUSIONS
We consider PM cancer is a transitional state from early to non-PM advanced cancer based on the facts such as diagnostic accuracy, rate of LN metastasis, and size.
