Department of Surgery Jars
| Description | Periosteal Fibrosarcoma. |
| Author | Department of Surgery |
| Copyright | Cairo University - Faculty of Medicine |
Description
This jar contains segments of two adjacent ribs. A mass arises from one side of a rib and is infiltrating the other one. The mass measures about 5 X 2 cm with an irregular surface with heterogeneous colour.
Diagnosis
Periosteal fibrosarcoma.
Some possible questions
Q. Why is it diagnosed as a tumour arising from the periosteum?
A. Because it expands one side of the rib only. A tumour arising from bony tissue should expand it in all directions.
Q. Why is it considered malignant?
A. It grossly infiltrates adjacent rib.