Air under central tendon of diaphragm is
The 'Cupola sign' is seen on a supine chest/abdominal radiograph in the presence of pneumoperitoneum. It refers to non-dependent gas that rises within the abdominal cavity of the supine patient to accumulate underneath the central tendon of the diaphragm in the midline.
Air under diaphragm sign
Cupola sign
Doges cap sign
Falciform ligament sign
Gastrointestinal Radiology