PMC6920296_01
Lump at the posterior knee joint with limited range of motion.
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A physical examination revealed a mass (sized 10 x 9 x 7 cm) with limited range of motion (ROM) extension 30 , flexion 70  (Fig. 1).
MRI revealed soft tissue mass sized 10 x 9 x 7 cm at posterior compartment of knee (white arrow).
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Magnetic resonance imaging (MRI) revealed a soft tissue mass at the posterior compartment of the knee (Fig. 2).
Histological examination showed a circumscribed and lobulated hypo cellular mass containing spindle cells.
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Histologic study was taken from core biopsy examination and the result showed a circumscribed and lobulated hypo cellular mass containing spindle cells (Fig. 3).
The ellips incision was made around the biopsy site.
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The ellipse incision was made 2 cm margin of skin around the biopsy site (Fig. 4).
Tumor mass was embbeded in the posterior compartment of the knee.
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Tumor mass had a partial well-defined capsule, popliteal artery and vein was embedded, and pressing the sciatic nerve (Fig. 5).
The popliteal artery was reconstructed with saphenous vein graft.
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The popliteal artery was reconstructed with saphenous veins graft (Fig. 6).