PMC4519614_01
(A) Anteroposterior radiograph. (B) Lateral-view radiograph of tumor formation in the anterior compartment of the knee.
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Examinations on the patient from 3 years earlier documented the same lesion and showed that there had not been any radiographic alterations over the past 36 months (Fig. 1).
Intraoperative appearance of the lesion.
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We did not identify any communication with the femur or tibia (Fig. 2).
(A) postoperative lateral-view radiograph. (B) Postoperative anteroposterior radiograph.
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(A) Anatomical specimen. (B) Sections through the specimen showing central cavity.
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After sectioning, it was seen to have a stratified appearance of hardened consistency and there was also a central cavity measuring 1.6 cm x 0.5 cm (Fig. 4).
Analysis under microscope, showing typical chondrocytes that were immersed in a chondroid matrix and distributed in a stratified manner, with areas of calcification.
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The diagnosis was concluded to be synovial chondromatosis (Fig. 5).