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Giant cell tumor of bone (GCTB) is a benign tumor with a tendency for local recurrence. Secondary malignant GCTB is rare, occurring in less than 2 % of GCTB cases. Mechanisms of malignant transformation of GCTB remain unclear. We examined 43 cases of GCTB (38 conventional cases, two lung implantation cases, and three secondary malignant cases) for p53 gene mutations and for loss of heterozygosity...
A 46-year-old man was admitted to the hospital with a recurrent giant-cell tumor of the distal femur. This was his fourth recurrence, and it had occurred 16 years after his last treatment. The resected recurrent tumor was histologically determined to be a conventional giant-cell tumor. However, a single lung metastatic lesion and local recurrence were noticed 6 months after the resection, both of...
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