PS02.157: ESOPHAGEAL SQUAMOUS CELL CARCINOMA IS ASSOCIATED WITH CHRONIC DISEASES AS WELL AS UNHEALTHY LIFESTYLES

Abstract Background Cancer and other chronic diseases such as cardiovascular disease, diabetes, chronic kidney disease, and respiratory disease share common risk factors, including aging and unhealthy lifestyles (eg, smoking and alcohol misuse). Although the recent prospective cohort large-scale study showed chronic diseases contributed to more than one fifth of the risk for incident cancer and more than one third of the risk for cancer death, the relation between esophageal squamous cell carcinoma (ESCC) and non-cancer chronic diseases (NCCD) still remain unknown. The aim of this study is to assess the independent and joint associations of major NCCD and ESCC. Methods From April 2011 to March 2017, 406 consecutive patients with ESCC diagnosed pathologically were enrolled. Their medical records as to patients’ background, the reason for their consultation, lifestyles, and medical history were investigated retrospectively in detail. Results As to the reason for their consultation, 45 patients (25.3%) were diagnosed at annual medical checkup (no symptoms), 125 (70.2%) consulted a doctor for any symptoms such as dysphagia, and 8 (4.5%) had other reasons. As to lifestyles, 304 (78.1%) were drinkers of alcohol (daily amount of alcohol consumption > 20g) and 302 (77.4%) were smokers (Brinkman index > 200), respectively. As to the medical history related to cancer or gastrointestinal diseases, 25 (6.8%) had a history of laryngopharyngeal cancer, 20 (5.1%) had a history of gastric cancer, 2 (0.5%) had a history of breast cancer, one (0.3%) had a history of sclerodema, and one (0.3%) had a history of esophageal achalasia. Of the 406 ESCC patients, 305 were early ESCC and the remaining 101 were advanced ESCC. As to the medical history in patients with advanced ESCC, 22 (21.8%) had a history of cancer of other organs, and 48 (47.5%) had NCCD including hypertension (35 patients), diabetes (18 patients), and hyperlipidemia (12 patients). Conclusion NCCD is an overlooked risk factor for ESCC, as important as two major lifestyle factors combined (drinkers of alcohol and smokers). General physicians who follow up NCCD patients should pay attention to the coexistence of ESCC. Disclosure All authors have declared no conflicts of interest.