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Absence of Anterior Commissure

DA: 784

Developmental anomaly information

Definition: The Anterior Commissure (precommissure) is a bundle of white fibers, connecting the two cerebral hemispheres across the middle line, and placed in front of the columns of the fornix.On a sagittal section, it is oval in shape, having a long vertical diameter that measures about 5 mm. Its fibers can be traced laterally and backwards on either side beneath the corpus striatum into the substance of the temporal lobe. It serves in this way to connect the two temporal lobes, but it also contains decussating fibers from the olfactory tracts, and is a part of the neospinothalamic tract for pain. The anterior commissure also serves to connect the two amygdala


  • Interhemispheric transfer deficits

Developmental anomaly parent: Cerebral commissures agenesis

Topology: Human body > Head and neck > Head > Cranium > Brain

System: Human body > Nervous system > Central nervous system > Brain

Developmental anomaly category: Agenesis

Case records MDB351, MDB438
Observed in MDB cases
Observed in combinaisons (MDB)
Observed in malformative diseases (MDB)
Associated genes in profile
Associated genes in malformative diseases
Associated chromosomal diseases
Associated signaling pathways
Associated developmental anomalies

Here is the list of developmental anomalies associated with this developmental anomaly, based on the cases' information :

Last modified: 2009-01-06 20:46:19 by farideh

Created: 2008-10-24 15:47:47 by farideh

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