略語大辞典 [Med] 8 ET expanding type (胃の腺癌の)進展型. expanding type; of GAC(gastric adenocarcinoma); Ming proposed a pathobiologic classification in 1977 based on the growth pattern of the neoplastic cells, an ET(expanding type) and an INF(infiltrative type); ref. Lauren divided carcinoma of 丸善「略語大辞典」JLogosID : 11874226