An unusual presentation of a giant tumour-like lesion of the thigh.

Soft tissue swellings of the thigh, which become painful and are gradually increasing in size, should always raise the suspicion of a soft tissue tumour. We report a case of a clinically silent chronic granuloma formation, which presented 45 years later as a giant tumour-like lesion. A metallic foreign body implanted following an injury was found as the source of the tissue reaction. This is the longest period of delay to presentation described in the English literature for the clinical manifestation of a granulomatous reaction.