PMC3461778_01
X-ray showing a lytic, radiolucent, lobulated lesion with cortical expansion, a sclerotic rim, and septations at the base of the middle phalanx of the left middle finger. No calcification or periosteal reaction is noted
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F1
No calcification or periosteal reaction was noted [Figure 1].
Tumor having a lobular pattern of growth of spindle shaped and stellate cells, with abundant myxoid and chondroid intercellular material; H and E x100 (inset: Lamellar bony trabeculae showing no significant pathology; x100)
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F2
Histopathology revealed a tumor having a lobular pattern of growth of spindle shaped and stellate cells, with abundant myxoid and chondroid intercellular material [Figure 2]. The lamellar bony trabeculae showed no significant pathology [Figure 2 inset].
The tumor lobules having a hypocellular center and a hypercellular periphery with scattered benign multinucleated giant cells (inset; H and E x400) and hemosiderin-laden macrophages; H and E x100
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F3
The lobules had a hypocellular center and a hypercellular periphery with scattered benign multinucleated giant cells and hemosiderin-laden macrophages [Figure 3].
One portion of the tumor showing cells with pseudomalignant features; H and E x100 (inset; H and E x400)
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F4
One portion of the tumor showed pleomorphic large bizarre cells with irregular-shaped nuclei and a smudgy chromatin pattern indicative of pseudomalignant features [Figure 4].