A young man with a very painful lesion of the knee

Case Identification

Case ID Number
Position within the bone
Periosteal reaction
Benign or Malignant

Clinical case information

Case presentation

This 15 year old boy has a painful tumor in his tibia, near the knee. A biopsy showed "giant cells" in the lesion. It continued to grow, and he has pain, a mass, and substantial leg atrophy.

Radiological findings:
A sclerotic and granular appearing lesion in the posterior and lateral tibial plateau, just under the joint surface, with some enlargement of the bone. There is a healed incision, without any sign of infection, but the area is very tender to the touch.
Laboratory results:
None available
Differential Diagnosis
Infection, chondroblastoma, osteosarcoma
Pathology results:
pending
Treatment Options:
Based on a presumptive diagnosis, a thorough curettage of the lesion was performed.
Special Features of this Case:
The patient was treated at the HEODRA hospital in Leon, Nicaragua