title: Synaptic lamellae in retinoblastoma.
abstract: During the electron microscopic examination of the retinoblastoma in a 21-month-old girl, we found numerous synaptic lamellae and synaptic vesicles in addition to other known features. These lamellae and vesicles can be regarded as additional proof of the neural origin of retinoblastoma.
mesh_terms: D002466:Cell Nucleolus / Q000648:ultrastructure; D002467:Cell Nucleus / Q000648:ultrastructure; D003593:Cytoplasm / Q000648:ultrastructure; D005134:Eye Neoplasms / Q000209:etiology / Q000473:pathology*; D005260:Female; D006801:Humans; D007223:Infant; D008854:Microscopy, Electron; D008867:Microtomy; D008928:Mitochondria / Q000648:ultrastructure; D012160:Retina / Q000473:pathology; D012175:Retinoblastoma / Q000209:etiology / Q000473:pathology*; D011984:Sensory Receptor Cells / Q000648:ultrastructure; D013194:Staining and Labeling; D013569:Synapses / Q000648:ultrastructure*; D013572:Synaptic Vesicles / Q000648:ultrastructure