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Pneumoperitoneum is pneumatosis (abnormal presence of air or other gas) in the peritoneal cavity, a potential space within the abdominal cavity. The most common cause is a perforated abdominal organ , generally from a perforated peptic ulcer , although any part of the bowel may perforate from a benign ulcer, tumor or abdominal trauma .
The cupola sign is seen on a supine chest or abdominal radiograph in the presence of pneumoperitoneum. It refers to dependent air that rises within the abdominal cavity of the supine patient to accumulate underneath the central tendon of the diaphragm in the midline. It is seen as lucency overlying the lower thoracic vertebral bodies.
Pneumoperitoneum (or peritoneal emphysema), air or gas in the abdominal cavity. The most common cause is a perforated abdominal viscus, generally a perforated peptic ulcer, although any part of the bowel may perforate from a benign ulcer, tumor or abdominal trauma. Pneumatosis intestinalis, air or gas cysts in the bowel wall
Computed tomography of the abdomen and pelvis, performed as a contrast CT, here presented as a volume rendering, specifying the scan range and field of view (FOV). It shows normal anatomy, with no injuries. The subject is a 21 year old male who had blunt trauma to the upper abdomen during motocross.
A CT scan image showing a ruptured abdominal aortic aneurysm. CT Scan of 11 cm Wilms' tumor of right kidney in 13-month-old patient. Computed tomography of the abdomen and pelvis is an application of computed tomography (CT) and is a sensitive method for diagnosis of abdominal diseases. It is used frequently to determine stage of cancer and to ...
While x-ray is a fast and inexpensive to screen for perforation, an abdominal CT scan with contrast is more sensitive and specific for establishing a diagnosis as well as determining the underlying cause. [19] Both CT and x-ray may initially appear normal, in which case diagnosis can be made by open or laparoscopic exploration of the abdomen.
However, it could easily be mistaken for free intra-abdominal air (pneumoperitoneum) which could mistakenly be attributed to bowel perforation. Chilaiditi syndrome is a rare condition when pain occurs due to transposition of a loop of large intestine (usually transverse colon ) in between the diaphragm and the liver , visible on plain abdominal ...
The pathogenesis of pneumatosis intestinalis is poorly understood and is likely multifactorial. PI itself is not a disease, but rather a clinical sign. In some cases, PI is an incidental finding, whereas in others, it portends a life-threatening intra-abdominal condition. [citation needed]