Investigations
Pertinent laboratory examinations including complete blood count and urinary analysis were within normal ranges. An ultrasound examination identified a fat-containing tumor in the retrovesical space. For a better assessment, a post-contrast CT was ordered. Although MRI was our first choice for imaging, the family could not afford the cost. The CT examination (Figure 1) revealed a large non-calcified fat attenuating presacral mass, measuring 12 cm x 7 cm x 6 cm in the longest CC x TR x AP dimensions, with internal enhancing linear strands. The lesion blended with the perineal fat inferiorly. The mass had compressed the bladder outlet and pushed it anterosuperiorly. This was the reason for the child’s urinary retention. The mass completely effaced the rectal lumen, making it impossible to identify.