PMC6475833_01
Sagittal US image (C9-2 curved array transducer; Philips, The Netherlands) of the lower abdomen shows a large, mixed hypoechoic and hyperechoic mass with an irregular shape and an ill-defined border and multiple locules. US indicates ultrasonography.
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Abdominal ultrasonography (US) showed an 8 cm mass with mixed echogenicity in caudal umbilical region (Figure 1).
Enhanced CT scan revealed a large, multiloculated mass in the midline of lower abdomen with thick septa and irregular border. The mass demonstrates mixed cystic and solid elements with area of low attenuation surrounded by high attenuating wall. Note the presence of multiple thick enhancing septa and fat stranding adjacent to the mass. No apparent calcifications were present. CT indicates computed tomography.
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Subsequent abdominal computed tomography (CT) scan confirmed a complex septated mass with solid and cystic components in the midline lower abdomen (Figure 2).
A routine CT scan performed 5 years previously showed no patent urachal remnants (sagittal reconstruction is shown here). CT indicates computed tomography.
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Of note, no urachal anomalies were seen on an abdominal CT scan 5 years earlier (Figure 3).