| Term: | visual system primitive neurectodermal tumor | 
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| Note: | This page represents a term created by the combination ("post-composition") of two ontology terms. For more information on the individual terms, click the hyperlinked name. | 
| Name: | visual system | 
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| Synonyms: | |
| Definition: | Sensory system responsible for the perception of light. | 
| Ontology: | Anatomy Ontology [ZFA:0001127] | 
| Name: | primitive neurectodermal tumor | 
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| Synonyms: | PNET | 
| Definition: | Primitive neuroectodermal tumors (PNET) are neoplasms derived from primitive neural stem cells either in the CNS or the periphery . These are small-cell, malignant embryonal tumors showing divergent differentiation of variable degree along neuronal, glial, or rarely mesenchymal lines. (M-9473/3, M-9364/3). | 
| Ontology: | MPATH [MPATH:370] | 
