Gastroscopy followed by pneumoperitoneum with no discernible lesion at laparotomy 3 hours later.
D000005:Abdomen; D005773:Gastroscopy; D006801:Humans; D007274:Injections, Intraperitoneal; D007813:Laparotomy; D011027:Pneumoperitoneum
GASTROSCOPY; LAPAROTOMY; PNEUMOPERITONEUM