Pneumoperitoneum – Cupola sign
Cupola sign refers to peritoneal air that is superior to the left lobe of the liver, having the appearance of a long, flat hat, hence the term “cupola” meaning hat. [Courtesy of Dr. N. Jaffer
Pneumoperitoneum – Crescent sign
Crescent sign – Upright abdominal radiograph showing abnormal presence of air under the right hemidiaphragm (arrow; left image).
LLD abdominal radiograph showing air over the liver (arrow; right image).
[Courtesy of Dr. N. Jaffer]
Ascites – CT Massive
The image demonstrates massive ascites where fluid is seen throughout the abdomen, displacing the bowel centrally and superiorly as it is less dense than the fluid. Arrow points to ascites located in lesser sac.
[Courtesy of Dr. N. Jaffer]
Ascites – CT
On CT, a small amount of ascites may be appreciated in the hepato-renal fossa as demonstrated in the image. [Courtesy of Dr. N. Jaffer]
Ascites – AXR
Plain abdominal film findings of ascites include generalized ground glass appearance, bulging flank sign, loss of posterior liver edge, centrally floating bowel. The first x-ray film above depicts the ground glass appearance of ascites and the bulging flank sign well, while the second shows centrally floating bowel loops. [Courtesy of Dr. N. Jaffer]
Pancreatitis
Mottled calcification in left upper quadrant suggestive of chronic pancreatitis.
Pancreas – Injected Dye
Contrast is injected here into both the bile (to the left of the image) and pancreatic (to the right of the image) ducts. Note that two pancreatic ducts are seen – pancreatic divisum. [Courtesy of Dr. N. Jaffer]
Pancreas – CT
This series of abdominal images is meant to depict the location and appearance of the pancreas by CT. The pancreas is seen just anterior to the aorta, and is fairly centrally placed. The tail is to the left, while the head is to the right. Note the easily visible pancreatic duct seen in the first image of the series. [Courtesy of Dr. N. Jaffer]
Acute Pancreatitis – CT
Abdominal axial CT images showing the pancreas in a patient with acute pancreatitis (left) and in a healthy person with a normal pancreas (right). [Courtesy of Dr. N. Jaffer]
Virtual Colonoscopy
CT colonography (virtual colonoscopy). 3-D endoluminal and 2-D axial CT images shown in parallel for same colonic lesion. Images demonstrate the importance of comparing both images for determining extent of identified lesions. Endoluminal view shows intraluminal part of lesion only, while the axial image demonstrates serosal extension of the lesion allowing for more accurate staging (arrows). [Courtesy of Dr. N. Jaffer]
