Male, 44 years old, mild pain in the right knee for 15 months, pain progressing in the last 3 months.
Fig.1 X-rays taken 15 months ago when the symptom began
Physical exam
Limp, no soft tissue mass, no limitation of the knee joint
Radiographs
Fig.2 X-rays taken in the clinic
Fig.3 CT taken in the clinic
Fig.4 MRI taken in the clinic
Fig.5 Bone scan taken in the clinic
Biopsy
Enchondroma
Fig.6 Image of pathology
Surgical management
Curettage and allograft grafting.
Fig. 7 X-rays postoperatively
Final pathology report
Enchondroma, but low-grade chondrosarcoma could not be excluded.
Fig.8 Images of pathology
Follow-up
Fig.9 4 months later
Fig.10 10 months later
Fig.11 15 months later with recurrent pain in the knee
Fig.12 Repeat CT scan
Fig.13 Repeat MRI scan
Fig. 14 Repeat bone scan.
Surgical management
Tumor resection with endoprosthesis replacement
Fig.15 Gross specimen
Fig.16 X-rays after operation
Final pathology report
Primary chondrosarcoma
Fig.17 Images of pathology
Fig.18 Images of pathology