COMPARATIVE CLINICOPATHOLOGICAL FEATURES OF EARLY GASTRIC-CANCER IN YOUNG AND OLDER PATIENTS

Background. The clinicopathologic features of advanced gastric cancer have been analyzed in young or older patients; however, with regard to early gastric cancer, it remains unknown whether the features differ between young and older patients. Reported here is an analysis of clinicopathologic characteristics in young and in older patients. Methods. This study is based on a retrospective review of 25 patients less than 40 years of age with early gastric cancer and of 64 patients more than 70 years of age with early gastric cancer. These patients were treated from 1977 through 1991. Results. Because in the older group there were early double cancers in three patients and quadruple cancers in one, 70 early cancers were present in these 64 patients. Although the young group included a larger percentage of women, the ratio of mucosal cancer to submucosal and the incidence of nodal metastasis did not differ between the groups. Poorly differentiated adenocarcinoma was detected in 13 (52%) of the 25 younger patients, whereas in the older group it was present in 6 cancers (8.6%) alone. The number of metastatic nodes and extent of nodal metastasis were more severe in the young group, but survival rates did not differ between the groups, The depressed type of lesion was present in all patients in the young group, whereas it was only 41 of 70 cancers in the older group. Conclusions. These findings suggest that early gastric cancer in young adults has aggressive features as based on the histologic pattern, in particular with cancer invasion into the submucosal layer. For these patients nodal extirpation and postoperative adjuvant chemotherapy should be performed in an attempt to prevent lymphatic or hematogenic metastases.