Long-term prognosis after endoscopic submucosal dissection for esophageal cancer in older adult patients

Background The validity of endoscopic submucosal dissection (ESD) for esophageal squamous cell carcinoma (ESCC) in older individuals with comorbidities remains unclear. Therefore, this study evaluated the safety and efficacy of ESD and additional treatment for ESCC in older adult patients. Methods The clinicopathological characteristics and clinical outcomes of 398 consecutive older adult patients (>= 65 years) with 505 lesions who underwent ESD for ESCC at the Hiroshima University Hospital between September 2007 and December 2019 were retrospectively evaluated. Additionally, the prognoses of 381 patients who were followed up for > 3 years were assessed. Results The mean patient age and procedure time were 73.1 +/- 5.8 years and 77.1 +/- 43.5 min, respectively. The histological en bloc resection rate was 98% (496/505). Postoperative stenosis, perforation, pneumonia, and delayed bleeding were conservatively treated in 82 (16%), 19 (4%), 15 (3%), and 5 (1%) patients, respectively. The 5-year overall and disease-specific survival rates were 78.9% and 98.0%, respectively (mean follow-up time: 71.1 +/- 37.3 months). Multivariate analysis showed that age and the American Society of Anesthesiologists classification of physical status class >= III (hazard ratio: 1.27; 95% confidence interval: 1.01-1.59, p = 0.0392) were independently associated with overall survival. A significantly lower overall survival rate was observed in the high-risk follow-up group than in the low-risk follow-up and high-risk additional treatment groups (p < 0.01). However, no significant difference in disease-specific survival was observed among the three groups. Conclusions ESD is safe for ESCC treatment in patients aged >= 65 years. However, additional treatments should be considered based on the patient's general condition.