fibromatosis colli


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  • Clinical

    • congenital torticolis, diagnosed < 6 mo
    • site: SCM muscle
    • imaging: distal SCL mass

  • Histology

    • fibroblastic proliferation, plump spindle cells
    • entrapped skeletal muscle
    • stroma: myxoid, collagenous

  • Stains

    • vimentin+
    • actin+
    		•