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Ultrasonographic findings of small bowel intussusception, focusing on differentiation from ileocolic intussusception

¹ Department of Diagnostic Radiology, Myongji Hospital, Kwandong University, College of Medicine, 697-24 Hwajung-dong, Dukyang-ku, Koyang, Kyunggi 412-270, ² Department of Preventive Medicine, Cheju National University, College of Medicine, 154 3-do-2-dong, Jeju City, Republic of Korea

View larger version (65K): [in this window] [in a new window]   Figure 1. Ultrasonographic images of a 7-year-old boy with abdominal pain and typical transient small bowel intussusception. Image in transverse plain (a) shows the crescent-in-doughnut sign (cursors) and image in longitudinal plain (b) shows the sandwich sign (cursors). The diameter of the doughnut measured 0.84 cm and the thickness of the outer rim of the lesion measured 0.10 cm. There were no mesenteric lymph nodes.

View larger version (66K): [in this window] [in a new window]   Figure 2. Ultrasonographic images of a 10-month-old boy with cyclic irritability and typical ileocolic intussusception. Transverse (a) and longitudinal (b) US scans show the diameter of the head measuring 2.88 cm and the thickness of the outer rim of the lesion measuring 0.49 cm. There was a mesenteric lymph node (arrow).