Background: Tumor size can be measured easily before or during operati
on with no special tools, but its prognostic use in patients with gast
ric carcinoma is still unclear. Methods: Clinicopathologic data of 479
patients who underwent curative operation for gastric carcinoma were
studied. The relationship between tumor size and survival of patients
was investigated. Results: The patients were divided into three groups
: 182 with tumors measuring <4 cm (group I), 252 with tumors of 4-10 c
m (group II), and 45 with tumors of greater than or equal to 10 cm (gr
oup III). The 10-year survival rates for group I, II, and III patients
were 92%, 66%, and 33%, respectively (p < 0.01), and the three groups
were significantly different with regard to depth of invasion (p < 0.
01), number and level of lymph node metastasis (p < 0.01), and stage o
f disease (p < 0.01). Multivariate analysis indicated that tumor size
independently influenced the survival of patients. Conclusions: Tumor
size clinically serves as a simple predictor of tumor progression and
survival of patients in gastric carcinoma.