case_images: PMC5412139_01
case_images: Radiographs of the knee joint 8 weeks after the first symptoms. A hypodense area is visible at the upper pole of the patella.
case_images: CRIOR2017-6573271.001.jpg
case_images: PMC5412139_01_CRIOR2017-6573271.001.jpg
case_images: fig1
case_images: For further diagnostics, another radiograph and a subsequent MRI of the left knee were performed showing an osteolytic lesion with a diameter of 1.5 cm of the patella with central necrosis (Figures 1 and 2).
case_images: MRI showing a sharply limited enhancement of the patella. The radiologist suspected a chondroblastoma.
case_images: CRIOR2017-6573271.002.jpg
case_images: PMC5412139_01_CRIOR2017-6573271.002.jpg
case_images: fig2
case_images: For further diagnostics, another radiograph and a subsequent MRI of the left knee were performed showing an osteolytic lesion with a diameter of 1.5 cm of the patella with central necrosis (Figures 1 and 2).
case_images: CT of the left knee clearly showing an osteolytic process with sharp borders.
case_images: CRIOR2017-6573271.003.jpg
case_images: PMC5412139_01_CRIOR2017-6573271.003.jpg
case_images: fig3
case_images: A CT scan revealed a 2.0 x 1.1 x 1.0 cm osteolytic lesion of the patella associated with a destruction of the ventral corticalis (Figure 3).
case_images: Follow-up radiographs 17 months after surgery revealing an almost normally appearing patella.
case_images: CRIOR2017-6573271.004.jpg
case_images: PMC5412139_01_CRIOR2017-6573271.004.jpg
case_images: fig4
case_images: Radiographs showed a nearly full osseous recovery of the patella (Figure 4).