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Duplication of the thalamic massa intermedia is a rare structural abnormality that may occur in patients with additional congenital defects.






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From the manuscript

Thalamic Massa Intermedia Duplication in a Dysmorphic 14 month-old Toddler

Free full text article: Thalamic Massa Intermedia Duplication in a Dysmorphic 14 month-old Toddler

Abstract
The massa intermedia is an inconstant parenchymal band connecting the medial thalami. It may be thickened in various disease processes such as Chiari II malformation or absent in other disease states. However, the massa intermedia may also be absent in up to 30% of normal human brains. To the best of my knowledge, detailed imaging findings of massa intermedia duplication have only been described in a single case report. An additional case of thalamic massa intermedia duplication discovered on a routine brain MR performed for dysmorphic facial features is reported herein.






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