Abstract
This study describes recent trends in incidence, survival and prevalence of subgroups of esophageal and gastric cancer in Linzhou city between 2003 and 2009. Data of esophageal and gastric cancer for the period of interest were extracted from the Linzhou Cancer Registry. Using information on tumor morphology or anatomical site, data were divided into six groups; esophageal squamous cell carcinoma, esophageal adenocarcinoma, other and unspecified types of esophageal cancer, and cardia, non-cardia, and unspecified anatomical site of stomach cancer. Incidence, survival and prevalence rates for each of the six cancer groups were calculated. The majority of esophageal cancers were squamous cell carcinomas (82%). Cardiac cancer was the major gastric cancer group (64%). The incidence of esophageal squamous cell carcinoma and gastric cardiac cancer increased between 2003 and 2009. Both esophageal and gastric cancer had a higher incidence in males compared with females. Overall survival was poor in all sub-groups with 1 year survival ranging from 45.9 to 65.6% and 5 year survival ranging from 14.7 to 30.5%. Prevalence of esophageal squamous cell carcinoma and gastric cardiac cancer was high (accounting for 80% overall). An increased focus on prevention and early diagnosis, especially in esophageal squamous cell carcinoma and gastric cardiac cancer, is required.
Highlights
In 2009, esophageal and gastric cancer was the fifth and second most common cancer in China, with agestandardized incidence rates of around 23.9 and 14.8 per 100,000, respectively (Jie et al, 2012)
This study describes recent trends in incidence, survival and prevalence of subgroups of esophageal and gastric cancer in Linzhou city between 2003 and 2009
Data of esophageal and gastric cancer (6,175 males; 3,896 females) in Linzhou city between 2003 and 2009 were extracted from the Linzhou Cancer Registry. These data were divided into six groups: 1. esophageal squamous cell carcinoma, 2. esophageal adenocarcinoma, 3. other and unspecified types of esophageal cancer, 4. cardia (C16.0), 5. non-cardia (C16.1-C16.6) 6. unspecified anatomical site of stomach cancer (C16.8-C16.9)
Summary
In 2009, esophageal and gastric cancer was the fifth and second most common cancer in China, with agestandardized incidence rates of around 23.9 and 14.8 per 100,000, respectively (Jie et al, 2012). Despite the declining trend in the incidence of these two cancers in Linzhou city form 1988 to 2003 it was still the first two most common cancer in Linzhou city in 2009 (Sun et al, 2007; Jie et al, 2012). Stable or upward trend of mortality of the esophageal and gastric cancer was reported in Linzhou city by comparing period 2006-2010 with 20012005 (Liu et al, 2012; Liu et al, 2013). The incidence of esophageal adenocarcinoma and the gastric cardiac cancer have been increasing in many western countries over the last 30 years (Hansson et al, 1993; Thrift et al, 2012; Hur et al, 2013)
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