PMC3507031_01
Fusiform mass in dorsal aspect of the index finger
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F1
The mass was 13 mm in diameter [Figure 1], with mild tenderness and firm in palpation, slightly mobile and, without marked movement on interphalyngeal motion, and no obvious adhesion to adjacent skin.
Paraosteal sclerotic lesion
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F2
CT-scan of the index finger. Conventional posteroanterior and lateral radiography revealed a paraosteal sclerotic lesion just abutting middle phalanx with bone density similar to adjacent bone and slight periosteal reaction [Figure 2], and further evaluation with CT-scan noted that the lesion has a patchy irregular border without cortical destruction or sauccerization and there is no typical zonal pattern in the lesion [Figure 3].
Soft tissue osseous lesion without of the middle phalanx cortical destruction
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F3
CT-scan of the index finger. Conventional posteroanterior and lateral radiography revealed a paraosteal sclerotic lesion just abutting middle phalanx with bone density similar to adjacent bone and slight periosteal reaction [Figure 2], and further evaluation with CT-scan noted that the lesion has a patchy irregular border without cortical destruction or sauccerization and there is no typical zonal pattern in the lesion [Figure 3].
Histopathologic examination revealed proliferation of fibroblasts, dposit of osteoid, osteoblasts, and giant cells
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F4
Multinucleated giant cells were also existed [Figure 4].