Presentation
Swelling at knee and arm. No local pain. Knee swelling has gradually increased during last 2 years.
Patient Data
Fractured exostosis of the humerus.
Femoral and fibular lesions are present.
The tibial lesion is approximately 6 x 5 cm in size.
Thin cartilage cap in the femoral lesion. Most of the tibial lesion shows a thin cap.
The posterior-medial-cranial part of the tibial lesion shows cartilage cap thickness up to 18 mm.
The large upper medial tibial lesion was excised surgically.
Case Discussion
An excisional biopsy of the tibial lesion was performed due to the risk of malignancy in a thickened cartilaginous cap (>15 mm). However, this was benign on histopathology.