Normal Plain Abdomen
Bowel dilatation
Obstruction
small bowel obstruction
large bowel obstruction
Ileus
Extraluminal Gas
Pneumoperitoneum ( free air)
Pneumoretroperitoneum
Abscess
Pneumobilia or Aerobilia
Portal vein gas
Intramural gas ( pneumatosis intestinalis)
Free air or pneumoperitoneum
Free air : left lateral decubitus view
Signs of free air in supine abdomen
Double wall sign or Rigler’s sign
Triangle sign
Lucent liver sign
Hepatic edge sign
Ligament sign
Retroperitoneal air
Pneumoretroperitoneum
Abscess
Aerobilia
Pneumatosis intestinalis and portal vein gas
Other findings
Mass
Calcification
Fluid
Vascular calcification
Calcified granuloma
Calcified pancreas
Gallstones
Renal stones
ureteric stones
Appendicolith
Calcified myoma
Ovarian teratoma
Dermoid cyst
RUQ mass
Hepatomegaly
Soft tissue mass
Ascites
Test 1
Test 2