PMC6280595_01
(A): Standing view showing the mass extending down the natal cleft (B): left lateral position showing a huge mass over the lower back and upper buttocks with skin excoriations.
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Inspection showed a huge smooth rounded mass (20 x 20 cm) extending down the lower end of the natal cleft hanging over buttocks as shown in Fig. 1(A and B).
(A): MRI of the pelvis showing cyst filled with faint calcifications with clear margins except over the lower coccyx compressing the pelvic structures anteriorly and superiorly. (B): MRI showing dimensions of the cyst and relations with pelvic structures.
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The mass was filling the presacral space, extending up the pelvis and down posterior to the rectum and anal canal compressing both and the urinary bladder with a huge extra corporal extension Fig. 2(A and B).
Cyst on table showing its dimensions after complete excision.
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Lower back and buttocks three months after surgery.
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The patient had smooth recovery with nice wound healing and cosmetic appearance (Fig. 4).