PMC7146309_01
Pre-operative pelvic MRI. (A) Before first surgery in our hospital, contrast-enhanced pelvic MRI in sagittal view showed a 6.8 cm * 5.2 cm * 7.3 cm mass located at presacral space (white arrow). (B) Before second surgery in our hospital, contrast-enhanced pelvic MRI in sagittal view showed a 3.2 cm * 7.2 cm * 5.8 cm mass located at presacral space (black arrow). (C) One year after final surgery, enhanced pelvic MRI showed no signs of recurrence (the yellow dotted circle indicated the location of the previous mass).
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F1
In contrast phase, the center of the lesion showed homogenous density and without enhancement (Figure 1A, white arrow). Before second surgery in our department, MRI showed a 3.2 cm * 7.2 cm * 5.8 cm mass located at presacral space (Figure 1B, black arrow). One year after his final surgery, enhanced pelvic MRI showed no signs of tumor recurrence (Figure 1C, the yellow dotted circle indicated the location of the previous mass).
Histological features of the resected tumors. Representative pathological photos of the third surgery: (A) original magnification x 100 and insert x 400. Representative photos of the latest surgery: (B) original magnification x 100 and insert x 400.
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F2
Pathological diagnosis of the resected tumor was benign presacral epidermoid cyst in the third surgery (Figure 2A, original magnification x100 and insert x400). The final diagnosis was SCC (Figure 2B, original magnification x100 and insert x400).