A Wandering Abdominal Mass in a Neonate: An Enteric Duplication Cyst Mimicking an Ovarian Cyst

Figure 1

MR and US images of the abdominal mass. (a) Fetal ultrasonogram at 37 weeks’ gestation: longitudinal section through the abdomen of the fetus shows a 4 × 3 cm cystic mass with sedimented echoes (arrow). (b) Fetal MR image at 28 weeks’ gestation: axial T2-weighted image shows a cystic mass lesion in the right side of the fetal abdomen (arrow). (c) Postnatal longitudinal ultrasonogram on day 0 shows a 4.5 × 3.5 cm cystic mass with floating internal echoes in the right abdomen. Note the fluid-debris level (arrow) and muscular rim sign (arrowhead). (d) Axial T2-weighted MR image on postnatal day 16 reveals a hyperintense cyst in the left lower abdomen (arrow).

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