fibrous hamartoma of infancy


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  • Clinical

    • age < 2 years
    • male predominance
    • site: extremities, trunk, but not hands or feet

  • Histology

    • 3 components, forming nodules
    • fibrous septa
    • mesenchymal cells
    • mature fat

  • Stains

    • fibrous septa: actin+, vimentin+
    • mesenchymal cells: vimentin+
    • desmin-

  • Ddx

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