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General
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Xray images
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CT shows large tumor of orbital floor invading maxillary sinus

Clinical images
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Botyroid tumor beneath the conjunctiva

Whole mount images
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Large tumor has infiltrated orbit

Micro description
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Micro images
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#1: alveolar pattern; #2: alveolar spaces contain anaplastic cells; #3: alveolar pattern and large anaplastic giant cells; #4: rhabdomyoblasts


#1: embryonal pattern; #2: bundles of spindle cells with hyperchromatic nuclei and numerous mitotic figures; #3: cross striations; #4: myxoid pattern


Round and tadpole-shaped rhabdomyoblasts

Cytologic images
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Long cytoplasmic processes and atypical nuclei (inset-muscle specific actin positive)

Positive stains
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Negative stains
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End of Eye > Orbit and optic nerve > Rhabdomyosarcoma of orbit



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