GIANT-CELL SOFT-TISSUE CHONDROMA - CASE-REPORT AND REVIEW OF THE LITERATURE

Soft tissue chondroma is a benign cartilaginous tumour most often loca ted at the extremity of the upper limbs. We report a very unusual case of soft tissue chondroma due to its location in the sole of the foot resulting in delayed diagnosis. Diagnosis of soft tissue chondroma was confirmed by microscopic examination and by immunohistochemistry show ing S 100 protein in the cells of mature and immature areas. The prese nce of numerous giant cells is exceptional. Labelling of the giant cel ls by KP 1 protein in the present case suggest that they are derived f rom macrophages.