Infected enteric duplication cyst

Description

An 8-month-old female infant presented with a 2-day history of vomiting, diarrhoea and fever. Physical examination revealed a painful right abdomen. Laboratory tests showed a C-reactive protein of 140 mg/L (normal: <6 mg/L) and a white blood cell count of 12.8x10⁹/L (normal: 4–15x10⁹/L). Ultrasound of the abdomen revealed a paracolic cystic mass of 1.4x5 cm with septations from the lower part of the liver into the right fossa with no signs of volvulus or intussusception (figure 1). Abdominal CT confirmed the cystic mass and revealed signs of infection. MRI of the abdomen suggested an enteric duplication cyst as the most likely diagnosis (figure 2).

Figure 1

Ultrasound: encapsulated tubular mass with predominant hypoechoic heterogeneous echogenicity under the right lobe of the liver.

Figure 2

MRI coronal T1-weighted image with intravenous contrast: tubular cystic mass with thick wall ventral and lateral...

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