Pneumoperitoneum in perforated duodenal ulcer.
R H
RH
EDWARDS
J H
JH
FOSTER
D000005:Abdomen; D004381:Duodenal Ulcer; D006801:Humans; D010439:Peptic Ulcer Perforation / Q000150:complications*; D011027:Pneumoperitoneum / Q000209:etiology*
PEPTIC ULCER PERFORATION/complications; PNEUMOPERITONEUM; PNEUMOPERITONEUM/etiology