Ascending colon | Radiology Reference Article | Radiopaedia.org
The ascending colon is the continuation of the cecum superior to the ileocecal valve. It is 15 cm in length and is secondarily retroperitoneal, although it has its own mesentery in approximately 25% of patients 1,2.
CT-pattern of Bowel wall thickening - The Radiology Assistant
2014年5月21日 · At first glance this really looks like pneumatosis in a patient with a very dilated ascending colon due to an obstructing tumor. Notice how gas bubbles can be seen in a circular arrangement and are also seen on the non-dependent portion of the bowel wall (blue arrow).
Epiploic appendagitis | Radiology Reference Article - Radiopaedia.org
2024年5月24日 · CT. The CT appearance is usually characteristic: a fat-density ovoid structure adjacent to the colon, usually 1.5-3.5 cm in diameter 2. thin high-density rim, known as the hyperattenuating ring sign (1-3 mm thick) 5,6. surrounding inflammatory fat stranding, and thickening of the adjacent peritoneum.
CT Colonography: Improving Interpretive Skill by Avoiding Pitfalls
2019年12月6日 · CT colonography image interpretation requires simultaneous detection of colonic pathologic disease and recognition of pitfalls that can simulate or obscure real findings. Artifacts and pseudolesions are commonly encountered at CT colonography and far exceed the frequency of true colonic pathologic disease.
Ascending Colon: Anatomy, Function, and Associated Conditions
2024年1月18日 · The ascending colon plays an important role in digestion. It absorbs water and other key nutrients from the indigestible material. The ascending colon helps solidify the waste into stool by removing water.
Bowel wall thickening at CT: simplifying the diagnosis
2014年1月10日 · Axial contrast-enhanced CT scan shows significant wall thickening of the ascending and descending colon (arrows) due to submucosal oedema, resulting in the stratified appearance. The marked thickening of the bowel wall and the mild pericolonic fat stranding suggest pseudomembranous colitis
Colorectal cancer | Radiology Reference Article - Radiopaedia.org
2024年7月24日 · The main use of CT is differentiating early disease (T1-T3ab) with <5 mm of extramural extension from advanced disease (T3cd/4) disease >5 mm of extramural extension as neoadjuvant therapy can be indicated for the latter 10-13. Other important prognostic factors such as tumor deposits and extramural venous invasion (EMVI) can be detected on CT.
Pictorial essay: improving diagnostic effectiveness of colorectal ...
2024年3月25日 · The aim is to increase detection of colorectal cancer at routine CT. Morphologic types and typical appearances. Three main morphologic appearances of colorectal cancer exist including annular (Fig. 1), polypoid (Fig. 2) and asymmetric (Fig. 3) bowel wall thickening.
Evaluation of colonic lesions and pitfalls in CT colonography: A ...
2012年2月26日 · Computed tomographic (CT) colonography, also known as virtual colonoscopy, is a validated method for the evaluation of the entire colon in asymptomatic and symptomatic patients [1,2]. The examination is based on a helical, thin-section CT of the cleansed and distended colon in the supine and prone positions.
Ascending colon rotation following patient positional change during CT ...
Results: Movement from supine to prone positions resulted in a change in the radial polyp location of between -23° and 79° (median, 21°), demonstrating external rotation of the ascending colon in almost all cases (2° to 79° in 36/37 patients and 42/43 lesions).