We report a double primary gastric cancer of different types seen on an endoscopy at the same time. At the first gastroscopy, Lymphoepithelioma-like carcinoma (LELC) appeared to be a benign submucosal tumor (SMT) and gastric adenocarcinoma was limited to the mucosa. Adenocarcinoma was removed by endoscopic submucosal dissection (ESD). However, a followup gastroscopy revealed an enlarged SMT, and another ESD was performed. The patient was additionally diagnosed with gastric LELC. This is the only case that LELC and gastric adenocarcinoma were found at the same time in Korea; therefore, the authors report this case with literature review.

• 원삼(대전 선병원 소화기 내과) | Sam Won
• 김혜린(대전 선병원 소화기 내과) | Hye Reen Kim
• 이광복(대전 선병원 소화기 내과) | Kwang Bok Lee
• 박우경(대전 선병원 소화기 내과) | Woo Kyung Park
• 윤형식(대전 선병원 소화기 내과) | Hyung Sik Yoon
• 강현모(대전 선병원 소화기 내과) | Hyoun mo Kang
• 곽형종(대전 선병원 병리과) | Hyung Jong Kwak
• 이계성(대전 선병원 소화기 내과) | Gye-Sung Lee Corresponding author