PMC7718133_01
CECT shows that the retrorectal tumor is located under the third sacral vertebral body.
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It was described as tailgut cyst (Fig. 1).
Contrast-MRI: white arrows indicate the enhancing cystic mass.
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The patient also underwent a contrast magnetic resonance imaging (MRI) of abdomen and pelvis which revealed a well-defined lesion in the presacral space with doubt comunication with the rectum which was displaced laterally. (Fig. 2).
Images of posterior approach show: a) the gluteal region pulled laterally with adesive draps and pre-operative incisional planning; b) the surgical exploration of the presacral space confirming the presence of the mass located anterior to S4; c) view of the surgical field after the excision.
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The gluteal region were pulled laterally with adesive draps and pre-operative incisional planning was performed (Fig. 3a). Afterwards a right longitudinal incision was made above the sacrococcygeal midline and the exploration of the presacral space confirmed the presence of the mass (Fig. 3b). It was located anterior to S4 and completely removed (Fig. 3c).