Extraosseous Ewing sarcoma
Right hip joint pain for 6 months progressed to pelvic swelling and limp.
CT abdomen and pelvis
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Sizable soft tissue mass lesion measuring about 10x7x5.5cm.
The mass shows matrix calcifications as well as areas of breaking down.
The mass extends caudally until the pelvic floor.
Osseous involvement of bone surface with cortical erosion.
With heterogeneous enhancement at the post contrast study.
Histopathologically proven case of Extraosseous Ewing's sarcoma