2020年4月27日 · The crescent is formed by mesentery which is dragged into the intussusception. It is naturally located only on one side of the bowel and therefore forms a crescent which is echogenic. It is thus the transverse equivalent of the pseudokidney sign.

6 天之前 · Children with classic findings of intussusception, however, need to be investigated with an enema, which is both diagnostic (the gold standard in the diagnosis of intussusception) and therapeutic. Ultrasound signs include: target sign (also known as the doughnut sign) pseudokidney sign. crescent in a doughnut sign

To summarize, the radiographic signs of intussusception are: 1) target sign, 2) crescent sign, 3) absent liver edge sign (also called absence of the subhepatic angle), and 4) a bowel obstruction. Recall that the target sign is a mass in the right upper quadrant.

2024年11月10日 · Graphic shows ileocolic intussusception. Note entering layer , returning layer , and apex of intussusceptum (terminal ileum). Intussuscipiens (cecum) and neck of intussusception are noted.

2015年12月21日 · Figure 59B Supine abdominal x-ray shows a large soft tissue mass in the right flank with air in the transverse colon outlining the leading edge of the intussusception, the “crescent sign” (arrow). Intussusception is the invagination of a segment of bowel (the intussusceptum) into the contiguous segment (the intussuscipiens).

2024年8月14日 · Crescent Sign. The Crescent sign is usually seen on an abdominal X-ray. It appears as a crescent-shaped gas pattern and indicates the presence of intussusception. This sign is less common but can be helpful when other signs are inconclusive. Meniscus Sign. The Meniscus sign is another radiological indicator seen on an X-ray.

Scans obtained at the middle or at the base of the intussusception showed a characteristic hyperechoic crescent in all cases. This crescent was formed by the mesentery enclosing the entering limb of the intussusceptum, which the authors have …

2015年12月20日 · Intussusception can be diagnosed by ultrasound when a donut, target, or “pseudokidney” sign is seen, most often in the right upper quadrant of the abdomen. 27 This appearance arises from intussuscepted bowel and mesentery within the intussuscipiens, producing the donut or target appearance on transverse images and a hypoechoic mass with ...

This radiograph shows an atypical crescent sign in the right upper quadrant just below the liver. The head of the intussusception is coming up the ascending colon. It can be seen protruding upward into the gas filled transverse colon at the hepatic flexure.

2017年8月5日 · The crescent-in-doughnut sign describes a variation of the classical target sign of the transverse sonographic appearance of intussusception (Fig. 1). Fig. 1 Transverse sonographic section of an ileocolic intussusception: Concentric alternating hyperechoic (indicated by black arrows ) and hypoechoic rings (indicated by white arrows ) represent ...