A polypoid bone tumor covered by a cap of hyaline cartilage of varying thickness and showing a core of cancellous bone. No evidence of specific granulomas. No evidence of malignancy.
Rt. Tibia swelling.
Bony fragments of collective size 6x5x1.5 cm, some showing cartilaginous cap of 0.3-0.8 cm, thick.
Tibia swelling, excision biopsy: