Complete Posterior Sagittal Anorectal Mobilization (PSAM): A new surgical approach for pediatric pelvic-perineal tumor resections.

The presented technical approach, defined as PSAM, is completely suitable for surgical resection of perineal-pelvic tumors, without the need of more invasive operations including transpubic dissection and/or anorectal split. Moreover, nervous and muscular sphincter structures are easily identified and preserved.