Elderly gentleman with abdominal pain. Non-distended abdomen.
Loading Stack -
0 images remaining
Slither of free gas under the right hemidiaphragm.
The erect chest x-ray can identify relatively small volumes of pneumoperitoneum provided the patient is in the erect position for a sufficient time for it to navigate under the diaphragm.
CT abdomen typically follows this finding with a view to identifying the cause prior to a laparotomy.