kaposiform hemangioendothelioma


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  • Clinical

    • site: retroperitoneum, skin
    • age: children

  • Histology

    • architecture: infiltrative lobules, fibrous septa, criss-crossing fascicles
    • cytology: spindle cells, bland
    • slit vascular lumens. Can also have areas resembling hemangioma

  • Stains

    • positive: CD31, CD34
    		•