title: Embryological perspectives on the fine structure of orbital tumors.
mesh_terms: D000818:Animals; D002471:Cell Transformation, Neoplastic; D003238:Connective Tissue / Q000196:embryology; D004475:Ectoderm / Q000648:ultrastructure; D006801:Humans; D008648:Mesoderm / Q000648:ultrastructure; D009915:Orbit / Q000473:pathology; D009918:Orbital Neoplasms / Q000196:embryology* / Q000473:pathology; D009626:Terminology as Topic