Abstract
Attention is called to the important differences between malignant gastric ulcer and the proliferative tumor. Likewise the great difficulty in differentiation between malignant and benign ulcer is emphasized. The operability rate in carcinoma of the stomach still remains only 50 per cent or less. The five year survival in patients having resection of the stomach for malignant ulcer is 45 to 50 per cent, whereas it is only 25 per cent in patients having “curative” operation for the proliferative tumor.