Case of the Month

Case 15

A 26 year old male came in with a mass near his right knee.

The patient was generally healthy, had no significant medical problems. His family history was unremakable. He had had several surgeries for removal of other masss from his bones and for correction of deformities of his forearm.

His AP pelvis radiograph, an AP of the knee, and AP of the proximal tibia, a CT scan of the proximal femur, and a CT reconstruction of the proximal femurs are shown.

Please answer the following questions, and send your answer to the email address listed below. Include the words "Case 15" in the subject line of your email.

1) What is the diagnosis?

2) Is this lesion a skeletal neoplasia, a skeletal aplasia, or a skeletal dysplasia?

3) These lesions can develop into cancers. What kind of cancer?

4) Bonus question 1; Comment on the patient's family history.

5) Bonus question 2: Surgical treatment of the forearm has been done to improve function. Has anyone proved that the surgery actually improves function? Cite a source.

Please include "Case 15" in the subject line of your email. Send your answers to questions@bonetumor.org