School ager with abdominal pain

Gastrointestinal
CT and US of target sign and pseudokidney sign in ileocolic intussusception
Axial CT with contrast of the abdomen (above left) shows a mass involving the ascending colon which has a target sign appearance which on sagittal CT (above right) has a pseudokidney appearance. Transverse US of the ascending colon mass (below left) again demonstrates a target sign while the sagittal US of the mass (below right) again demonstrates a pseudokidney sign.

The diagnosis was ileocolic intussusception due to lymphoid hyperplasia with the lead point of the intussusception being mesenteric lymph nodes.

Published