Two classic signs for Celiac Sprue malabsorption are: Moulage Sign (tube of wax) - In severe cases, the jejunum can appear as a tube with no visible folds, resembling a smooth "cast" or mold due to…
The classic Rigler's Triad for gallstone ileus consists of pneumobilia a mechanical bowel obstruction an ectopic gallstone Rigler's Sign is the visualisation of both the inner and outer surfaces of…
Accurately measuring enhancement is critical for distinguishing a benign cyst from a solid neoplasm on CT. The Rule: True enhancement requires an increase of >20 HU from the unenhanced to the…
Papillary RCCs have a very distinct imaging appearance compared to the more common clear cell subtype. Enhancement: They are classically hypovascular . On a multiphasic CT, they often enhance less…
Simultaneous dilatation of both the common bile duct (CBD) and the main pancreatic duct (MPD) strongly suggests an obstructing lesion in the pancreatic head or ampulla. Malignant Stricture: Look for…
Autoimmune Pancreatitis (IgG4-related disease) is the great mimicker of pancreatic carcinoma, but unnecessary resection can be avoided by spotting its classic findings: Morphology: Diffusely…
Differentiating common primary pancreatic cystic neoplasms requires combining morphology with patient demographics. Serous Cystadenoma: Older women; microcystic, lobulated mass. Pathognomonic central…
Primary gastrointestinal lymphoma classically presents with marked, bulky bowel wall thickening that paradoxically widens the bowel lumen —a phenomenon termed "aneurysmal dilatation." This occurs…
Omental infarction classically presents on CT as an ill-defined area of fat stranding that evolves into a focal, heterogeneous mass located between the anterior abdominal wall and the colon . The…
Hepatic Artery Resistive Index (HARI) serves as a highly useful discriminator for diagnosing cirrhosis. While healthy, non-cirrhotic individuals typically have a HARI of 0.7 or less , patients with…
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