Gallbladder cancer survival analysis between 2004 and 2008 in Shanghai

ObjectiveTo analyze survival rates of gallbladder cancer in Shanghai during 2004-2008.

MethodsData on gallbladder cancer cases diagnosed from 2004 to 2008 was from the Shanghai Cancer Registry, and so was the follow-up information.Life Table and Ederer Ⅱ were used to calculate observed survival(OS) and relative survival(RS) in gallbladder cancer survivors with different demographic characteristics and diagnostic status.

ResultsFive-year OS and RS of gallbladder cancer in Shanghai during 2004-2008 were 12.07% and 19.32%, respectively.Significant difference existed among different age groups in patients with 5-year OS (P < 0.01).Seventy five years old and above had the lowest 5-year OS, only 5.98%.The survival rates in stage Ⅰ and stage Ⅱ was higher than those in stage Ⅲ and stage Ⅳ.But the survival rate of cancer in gallbladder was higher than in other subsites.In addition, the survival of adenocarcinoma had no difference with other histologic types.Survival rates of gallbladder cancer did not vary by gender and residential areas.In the past 30 years, the relative survival rates in urban area of Shanghai had a certain increase both in man and women.

ConclusionSignificant differences in survival rates have been found among various age, diagnostic stages, subsites, and tumor histological types.The 5-year OS and RS increase significantly in Shanghai over the past three decades, but far below the other common cancer types.