PMC4718140_01
MRI of right thigh: A large mass lesion measuring 18x8x7.5 cm, in the mid-thigh just adjacent to the femoral cortex without obvious bone destruction.
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Magnetic resonance imaging (MRI) of the right thigh showed a large lesion measuring 18x8x7.5 cm, in the mid-thigh just adjacent to the femoral cortex, without obvious bone destruction, findings in keeping with a recurrent neoplastic process (Figure 1.). The deep intramuscular tumor measured 15.5x9.0x8.0 cm (pT2b), (Figure 3, Case 1).
MRI of left thigh: Incidental mass which was highly suspicious of another sarcoma 10x4.6x4.6 cm in the posterior aspect of the mid-thigh.
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The tumor measured 8x4 cm (ypT2b (Figure 5, Case 2).
Case 1 - Increased stromal cells pleomorphic hyperchromatic spindle cells and mimotic activity. Inset: Adipocytes separated by thickened fibrous septae containing atypical hyperchromatic spindle cells.
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The deep intramuscular tumor measured 15.5x9.0x8.0 cm (pT2b), (Figure 3, Case 1).
PMC4718140_02
MRI of left thigh: Incidental mass which was highly suspicious of another sarcoma 10x4.6x4.6 cm in the posterior aspect of the mid-thigh.
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The tumor measured 8x4 cm (ypT2b (Figure 5, Case 2).
Right thigh MRI showed a 6x4x3 cm well-defined capsulated heterogeneous soft tissue mass lesion in posterior aspect of the right knee behind the popliteal vessels with extra-tumor stranding and infiltration of nearby muscle with no evidence of involvement of the popliteal fossa neurovascular bundle.
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There was no evidence of involvement of the popliteal fossa neurovascular bundle (Figure 4.).
Case 2 - Sarcoma showing tumor giant cells and mitotic activity. Inset: Immunhistochemistry (Caldesmon) showing positive standing, leiomyosarcoma.
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The tumor measured 8x4 cm (ypT2b (Figure 5, Case 2).