This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': "In which of the following conditions is air under both sides of diaphragm visualized -a) Perforated Meckel's diverticulumb) Uterine rupture following illegal abortionc) Perforation of duodenal ulcerd) Liver abscesse) Ruptured appendix \nSelect and explain. \nA. bcde, B. abce, C. acde, D. abde", 'role': 'user'}, {'content': "Answer: B \nExplanation: Gas under left hemidiaphragm is due to fundal gas, a normal finding. When gas is present under right hemidiaphragm also it's due to pneumoperitoneum.\nCauses of Pneumoperitoneum\n\n1)\xa0\xa0 Perforation of GI tract\n- Peptic ulcer\n- Inflammation (diverticulitis, appendicitis, toxic megacolon, necrotizing enterocolitis)\n- Infarction\n- Malignant neoplasm\n- Obstruction\n- Pneumatosis cystoides rupture\n- Iatrogenic-endoscopy\n2) Iatrogenic\n- Surgery, peritoneal dialysis, drainage catheters, biopsies\n3) Penetrating abdominal injury.\n4) Through female genital tract\n- Spontaneous\n- Iatrogenic\n- iatrogenic perforation of uterus or vagina\n- culdocentesis\n- tubal patency test\n5) Gas forming peritonitis\n6) Pneumothorax with pleuroperitoneal fistula", 'role': 'assistant'}]