Fig. 3
From: Anatomical derangements after failed PSARP: correlating MRI and operative findings
Demonstration of the effect of reoperation (redo PSARP) on rectifying the distorted internal pelvic anatomy. Upper row (before reoperation): pelvic MRI of 19-month-old boy presenting with complications after a previous PSARP (before closure of colostomy). a Midsagittal MRI demonstrating very wide pelvic hiatus (almost occupying the entire anteroposterior diameter of bony pelvis) with flat anorectal angle. b Axial MRI (I-plane) demonstrating elongated transverse section of the anorectum (double arrow-head line). Lower row (after reoperation): repeat pelvic MRI at follow-up (5 years later) after redo PSARP (reconstruction of pelvic diaphragm). c Midsagittal MRI demonstrating narrower pelvic hiatus and restored anorectal angulation. d The effect on the transverse section of the anorectum is demonstrated in axial MRI (I-plane). Note: The progression of a small anterior meningocele through a small sacral defect (compare c and a)