PMC3583030_01
CT-scan three years preoperative. The corticalis is
preserved. Within the lesion pseudo-trabeculation is visible.
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F1
A CT-scan and MRI-scan were performed and revealed a bone cyst with sclerotic borders without destruction of the cortical bone (Figs. 1, 2).
T1-weighted MRI three years preoperative. Note that the
lesion presents with low signal intensity and no infiltration of the
surrounding tissue.
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F2
A CT-scan and MRI-scan were performed and revealed a bone cyst with sclerotic borders without destruction of the cortical bone (Figs. 1, 2).
CT-scan 2 weeks before the operation. There is cortical breakthrough of the tumor. The size of the lesion has slightly increased in
comparison the previous CT-scan.
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F3
However, no cortical breakthrough was present (Fig. 3).
Histological examination of biopsy shows abundant collagen fibers, strong positive labelling for the adhesion protein beta-Catenin,
weak positive labelling for S-100 and almost no positive stain for the proliferation marker Ki67.
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F4
Morphology and immunophenotype were consistent with either aggressive fibromatosis or desmoplastic fibroma, both of which express beta-catenin (Fig. 4).
Intraoperative photograph showing the removed tissue. It
has a beige color and hard as well as soft areas of consistency.
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F5
The tissue was beige in color with hard and soft areas of consistency (Fig. 5).
CT-scan 6 months after the operation. No residual tumor is
present.
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F6
Postoperative follow-up examinations as well as CT-scans 6 and 18 months after surgery showed good integration of the graft (Figs. 6, 7).
CT-scan 18 months after the operation. The bone graft is
well integrated in pelvic bone. No discontinuity of the cortical
bone. No recurrence of the tumor is present.
TOORTHJ-7-40_F7.jpg
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F7
Postoperative follow-up examinations as well as CT-scans 6 and 18 months after surgery showed good integration of the graft (Figs. 6, 7).