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variable connection between the two thalamic masses across the third ventricle; absent in about 20% of human brains.
Synonym(s): adhesio interthalamica [TA], massa intermedia ☆ , commissura cinerea, commissura grisea (1) , intermediate mass
Farlex Partner Medical Dictionary © Farlex 2012
The middle commissure of the brain, an inconstant mass of gray matter extending across the third ventricle and connecting adjacent surfaces of the thalamus.
See also: massa
Medical Dictionary, © 2009 Farlex and Partners