<prompt> In which of the following conditions is air under both sides of diaphragm visualized -a Perforated Meckels diverticulumb Uterine rupture following illegal abortionc Perforation of duodenal ulcerd Liver abscesse Ruptured appendixbcdeabceacdeabde  <response>: Gas under left hemidiaphragm is due to fundal gas, a normal finding. When gas is present under right hemidiaphragm also its due to pneumoperitoneum.Causes of Pneumoperitoneum1 Perforation of GI tract- Peptic ulcer- Inflammation diverticulitis, appendicitis, toxic megacolon, necrotizing enterocolitis- Infarction- Malignant neoplasm- Obstruction- Pneumatosis cystoides rupture- Iatrogenic-endoscopy2 Iatrogenic- Surgery, peritoneal dialysis, drainage catheters, biopsies3 Penetrating abdominal injury.4 Through female genital tract- Spontaneous- Iatrogenic- iatrogenic perforation of uterus or vagina- culdocentesis- tubal patency test5 Gas forming peritonitis6 Pneumothorax with pleuroperitoneal fistula 