Yes: Presence of a soft tissue sarcoma of leg or extremity in a young child presents as a well defined mass. These arise from supportive structures such as fibrous tissue, fat, vessel and nerve. Malignant tumors here are well known i.e. fibrous tumors ie fibrosarcoma, dermatofibrosarcoma or fibroblastic lesions. Also lipoSa and malignant schwannoma. X ray can show tumor but MRI or CAT better.
Answered 12/3/2015
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