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Year : 2008  |  Volume : 42  |  Issue : 1  |  Page : 100-101

Chondroblastoma patella presenting as a pathological fracture

Sri Devaraj Urs Medical College, Kolar, Karnataka, India

Correspondence Address:
V R Venkatesh Reddy
Sri Devaraj Urs Medical College, Kolar, Karnataka
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0019-5413.38592

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A 24-year-old male presented with an inability to walk after a trivial fall. He had pain and mild swelling anterior to the right knee for the past one year. X-ray showed a transverse fracture of patella with a lytic lesion occupying most of the two halves of the patella. Fine needle aspiration cytology (FNAC) of the lytic lesion revealed a few osteoclastic giant cells and occasional osteoblasts against a hemorrhagic background. Patellectomy was performed. Histology revealed trabecular bone admixed with proliferating chondroid tissue at places admixed with myxoid and fibrous tissue with focal areas of calcification suggestive of chondroblastoma. Focal areas showed osteoclastic giant cells with areas of hemorrhage. The purpose is to present a rare tumor occurring at an unusual site which presented as pathological fracture.

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