Do guidelines exist for the appropriate management of CTC findings? If a mass is detected, surgical consultation is recommended. For a polyp 10 mm or greater in size, or if there are three or more polyps 6 mm or larger, endoscopic resection is recommended. If less than three polyps measuring 6-9 mm are detected, recommendations …
primary differences between virtual colonoscopy, also referred to as computed tomographic colonography (CTC), and optical colonoscopy. Technologic advances over the past few years have allowed CTC to evolve into the premiere radiologic method to investigate colonic neoplasia, surpassing double-contrast barium enema. However, optical colonoscopy continues to be the primary tool used for colorectal cancer screening. …
What pancreatographic features distinguish pancreas divisum from complete obstruction of the main pancreatic duct? Although the main duct opacified via the major papilla is shorter than normal in both conditions, their pancreatographic appearances are usually distinctive. With obstruction, the main duct appears truncated. Caliber of the opacified part of the main duct and its branches …
Pancreas divisum versus complete obstruction of the main pancreatic duct Read More »
What is the double duct sign of cholangiopancreatography? A stricture or complete obstruction of the intrapancreatic common bile duct and another stricture or complete obstruction of the main pancreatic duct nearby constitute the double duct sign. The most common malignant cause is adenocarcinoma of the pancreatic head; cholangiocarcinoma, lymphoma, and metastasis are occasional causes. The …
What is the role of defecography (evacuation proctography)? Defecography may identify the cause and help direct therapy if there is anorectal dysfunction. It may also show one or more of the following: rectocele, rectal intussusception (rectorectal or intraanal), external rectal prolapse, and enterocele. Optimal diagnosis and management require correlation of defecography findings with history, physical …
What are indications for either single- or double-contrast techniques of a barium enema examination? Single contrast: for fistula or sinus tract evaluation, anastomotic integrity prior to ileostomy closure, and obstruction (predominantly colonic volvulus) Double contrast: for colorectal cancer and colitis There has been a substantial decline in the use of double-contrast barium enema as a …
What are indications for either SBFT or enteroclysis? In the past, SBFT and enteroclysis (also known as small bowel enema because it involves injection of contrast medium directly into the small bowel) have been employed in the evaluation of seemingly any type pathologic condition of the small bowel, including inflammatory bowel disease, neoplasm, and obstruction. With the …