The X-ray of the left elbow and upper radius and ulna in a 34 year old man who complained of pain and swelling of 6 months duration over his upper ulna. There has been no history of trauma, and the patient is otherwise in good health. Bone scan showed no other bony involvement. This was a malignant fibrohistiocytoma. This is a highly malignant bony tumour much more malignant than the related soft tissue fibrosarcoma.
Treatment is an above elbow amputation.
An attempt at radical excision would be difficult at this site, especially as the tumour has involved the adjacent soft tissues. The tumour is relatively resistant to both radiotherapy and chemotherapy. The differential diagnosis at this age group would include a secondary deposit from carcinoma of the prostate. The patient, however, is young for this. In addition, bone scan showed no other bony secondary deposits.