113 Background: Surgery has been the standard treatment for operable squamous esophageal cancer. However, radiation therapy/chemoradiotherapy (RT/CRT) or endoscopic resection (ER) could be an alternative treatment option for stage 0-IA (TNM 7th edition) squamous esophageal cancer, because these treatments are less invasive and can preserve the organ. To evaluate the efficacy of surgery, RT/CRT and EC for stage 0-1A squamous esophageal cancer in clinical practice, we reviewed our experience. Methods: From March 2007 to December 2010, 92 patients with stage 0-IA squamous esophageal cancer were treated in our institute. Overall survival, relapse-free survival, and relapse pattern were evaluated according to the initial treatment modality. Results: Of 92 patients (pts), 76 were male and 16 were women. Median age was 65.5 years old. Tis/T1a/T1b:4/36/52. Median follow up time was 29.1(4.7-55.5) months. As an initial treatment, 9 pts received surgery, 27 pts received RT/CRT and 56 pts received ER. Among the pts underwent ER, one patient underwent esophagectomy and 13 pts were received CRT based on the pathological evaluation for the risk of the lymph node metastasis. Two-year relapse free survival and overall survival of surgery, RT/CRT and ER was 77.8%/100%, 68.6%/100% and 89.8%/95.7%, respectively. After completion of initial therapy, local failures (residual or recurrent disease), regional lymph node relapse and distant metastasis and 1 undetermined relapse were observed in 6, 3 and 5 pts, respectively. Eight out of the 15 pts with recurrence could be disease free after salvage therapy. While 4 pts died during the follow up period, all pts died from other diseases and no pts died from esophageal cancer. Overall esophageal preservation rate was 89.1% (82/92). Conclusions: Although longer follow-up was needed, this study showed that non-surgical treatments (RT/CRT or ER) for stage 0-1A squamous esophageal cancer could be an alternative treatment option and could provide a chance of organ preservation. [Table: see text]