NCIt definition : A rare malignant soft tissue neoplasm of uncertain differentiation, characterized
by the presence of chondroblast-like cells in a myxoid stroma and a multinodular growth
pattern. The most common sites of involvement are the deep soft tissues of the extremities,
particularly the thigh. It usually presents as an enlarging soft tissue mass. Patients
may have long survivals, but local recurrences and metastases occur in approximately
half of the cases. The most common site of metastasis is the lungs.;