The significance of pneumoperitoneum in perforated gastroduodenal ulcer.
D000005:Abdomen; D006801:Humans; D007274:Injections, Intraperitoneal; D007327:Insufflation; D010439:Peptic Ulcer Perforation; D011027:Pneumoperitoneum
PEPTIC ULCER/perforation; PNEUMOPERITONEUM