Gastric cancer mimicking a submucosal tumor diagnosed by laparoscopic excision biopsy

Tsunehiro Takahashi, Yoshihide Otani, Masashi Yoshida, Toshiharu Furukawa, Kaori Kameyama, Yasutada Akiba, Yoshiro Saikawa, Tetsuro Kubota, Koichiro Kumai, Shigeru Kuramochi, Makio Mukai, Hiromasa Ishii, Masaki Kitajima