This neoplasm is a surface lesion without extension into the medullary canal.
The smooth periphery of the soft tissue extension of this lesion also suggests slow growth.
| Images of Musculoskeletal Oncology |
| Parosteal OGS |
| This young adult patient developed a typical parosteal OGS of the distal femur in a very common location for this low-grade OGS. |
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| Gross photo made after high thigh amputation and sectioned in the Bone Lab. This neoplasm is a surface lesion without extension into the medullary canal. The smooth periphery of the soft tissue extension of this lesion also suggests slow growth. |
| This patient was without evidence of disease at 20 years following amputation. |
| Learning Issues: The architecture of a perosteal osteosarcoma suggests the biologically slow growth of this lesion. |
| Images of Musculoskeletal Oncology |
| University at Buffalo Department of Orthopaedics |