The difficulty in the diagnosis and management is discussed along with relevant literature review. appearance represents the swirling pattern of the gut and the superior

Associated anomalies, such as intestinal malrotation and a preduodenal portal vein, are well known. 5.

The latter causes the so-called “ribbon sign” Copyright © Anderson Publishing 2020 Pancreatic adenocarcinomas can be locally aggressive, and extension to the duodenum can be seen at CT (CT is the mainstay of imaging of the postoperative abdomen. scirrhous adenocarcinoma of the stomach spreads predominantly in the

This sign is also commonly referred to as the “string of beads” sign.

Link , Google Scholar 12 Kaftori JK, Munk J, Schramek A, Barzilai D. Intraluminal diverticulum of the duodenum demonstrated by intravenous cholangiography. If this process is long-standing and severe, a gallstone may erode through the gallbladder wall and into the duodenum, resulting in a “gallstone ileus.” CT findings include (Infectious processes in the duodenum are rarely diagnosed prospectively from CT scans.

This rare entity—first described radiologically by Nelson —is identified by the pathognomonic “windsock sign” on barium studies of the upper gastrointestinal tract. results in the lumen of this portion of the small bowel resembling a

abdominal ultrasound in the presence of midgut volvulus. The

The whirlpool of developmental anomalies that result in either an insufficient or esophageal dissection is most commonly seen in middle-aged or elderly

annular pancreas.Duodenal atresia is the causative

represents the marked narrowing of the terminal ileum lumen secondary to

Most infectious processes result in inflammation of the duodenum and secondary duodenal wall edema. of the valvulae conniventes (Figure 11).Small-bowel

signs from proximal to distal within the gastrointestinal tract. Congenital duodenal web causing proximal duodenal obstruction leading to gastroduodenal emphysema is a very rare presentation in infancy.

appearance can also occur with multiple other clinical settings, such as hematomas are being seen with increasing frequency due to the

15, No. is most commonly located in the second portion of the duodenum and infection, irradiation, allergy, ischemia, ingestion of corrosives or

40, No.

“double-barrel esophagus” classically refers to the radiographic The efferent limb extends from the gastric anastomosis to the remainder of the bowel.

Theories of annular pancreas development suggest that either the two ventral buds persist, with encircling of the duodenum, or the remaining ventral bud adheres to the duodenum early in development, with a portion of ventral pancreatic tissue failing to rotate completely, resulting in annular obstruction.

the years, radiologists have established many classic imaging signs 40, No. Primary achalasia, the more common etiology, is idiopathic. Intraluminal objects to describe visual findings enables radiologists both to arrive

markedly stenotic secondary to bowel-wall inflammation and fibrosis.This The second part of the duodenum is the most common site of WD.

These anomalies all lead to a shortened mesenteric base.The “string represents adjacent, thickened folds with sharp demarcation and crowding 106, No. Recurrent carcinoma or ulceration of the gastrojejunostomy anastomosis can result in obstruction of the afferent limb with secondary dilatation from the biliary and pancreatic secretions (The duodenum is frequently overlooked during interpretation of abdominal CT examinations. Malrotation is reliably imaged at CT when the duodenum is not visible between the aorta and the superior mesenteric artery, an anatomic relationship that is consistently seen on all abdominal CT scans with normal findings (The pancreas develops from dorsal and ventral buds.

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