Structure and individual anatomical variability of lobules IV V of the human cerebellar hemispheres

Maryenko NI, Stepanenko OY

The aim of the present study was to determine morphological variations in the lobules IV-V of the human cerebellar hemispheres. Material and methods. The research involved cerebella of 100 people of both sexes, who died of causes unrelated to brain pathology at the age of 20-95. The parasagittal sections of the cerebellum were investigated. Possible variations in the size, shape and peculiarities of branching of the white matter in the lobules IV-V of the cerebellar hemispheres were investigated. Results. Complex branched white matter is the basis of the IV-V lobules of human cerebellar hemispheres. The shape of the IV-V lobules is quite varied. Differences of the structure of these lobules depend on the characteristics of the branching of the white matter. The shape of the lobule depends on location of the section. Structure of the lobules is different on serial parasagittal sections. We described 2 variants of branching of the white matter of the hemispheric lobules IV-V at a distance 5 mm from midsagittal section (the 2nd variant is the most common) and 10 common variants of the shape of IV-V lobules (10 mm from midsagittal section); the third variant is the most common variant of the lobule IV; the first, second, and third variants are the most common shape variants of the lobule V. Conclusion. Described variants of the shape of the cerebellar lobules can be used as criteria standards of modern diagnostic imaging techniques for the diagnosis of various diseases of the CNS.

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