granular cell tumor


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  • Clinical

    • site: head/neck, breast, proximal extremities, GI tract (distal esophagus), respiratory tract

  • Histology

    • pink cells
    • granular cytoplasm on high power
    • bland to low grade cytology
    • indistinct cell borders

  • Stains

    • pos: S100, CD68
    • neg: HMB45, Melan-A
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