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Fig. 5. —6-month-old male infant with intussusception and history of gastroenteritis. Enema reduction was successful. Transverse sonogram of right mid abdomen shows typical doughnutlike appearance of intussusception. Hypoechoic outer rim is thick (arrowheads). Encircled by outer rim, structure consists of hyperechoic crescent-shaped center, which represents entrapped mesentery, eccentrically surrounded by heterogeneously hypoechoic area that is formed by central limb of intussusceptum, probably including cecoappendiceal complex. Hypoechoic dots in hyperechoic mesentery represent vessels. No lymph nodes are revealed in intussusception.

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