Anat Cell Biol.  2022 Sep;55(3):376-379. 10.5115/acb.22.048.

A rare additional lobe of cerebellum, projecting from its superior surface

• Nayak SB
• Sumalatha S
• Shetty SD

• KMID: 2533364
• DOI: http://doi.org/10.5115/acb.22.048

Abstract

Human cerebellum plays a vital role in motor coordination, regulation of muscle tone and maintaining the equilibrium of the body. It seldom shows anatomical/morphological variations. Herein, we report the presence of a small additional lobe projecting out on the superior surface of the right cerebellar hemisphere in the para-vermal area in an adult male cadaver. There was a notch on the tentorial surface of the occipital lobe of the right cerebral hemisphere, corresponding to the additional lobe of cerebellum. The additional lobe was histologically normal, with no evidence of any tumour cells. Knowledge of this variation is of importance to radiologists, neuroanatomists and neurosurgeons.

Keyword

Cerebellar; Brain; Coordination; Variation; Ataxia

Figure

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  Fig. 1 Posterior view of the brain showing the AL of the cerebellum. Occipital lobes have been pulled up slightly. LOL, left occipital lobe; ROL, right occipital lobe; LCH, left cerebellar hemisphere; RCH, right cerebellar hemisphere; V, vermis; AL, additional lobe.

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  Fig. 2 Closer view of the cerebellum showing the AL. LCH, left cerebellar hemisphere; RCH, right cerebellar hemisphere; V, vermis; AL, additional lobe.

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  Fig. 3 Photomicrograph of AL with H&E stain, showing normal histological features (10× magnification). ML, molecular layer; PN, purkinje neurons; GL, granular layer; WM, white matter.

Reference

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