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Bridgette Arnett, MD, PhD

Arch Neurol. 2003;60:898-900.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

INTRODUCTION

Current understanding of cerebellar ectopia is primarily based on the detailed study and classification of this rare rhombencephalon deformity by Hans Chiari, MD, more than a century ago. Recent advances in neuroradiology, especially since the introduction of magnetic resonance imaging, have enabled the incidental diagnosis of cerebellar ectopia. This radiographic finding, increasingly observed in asymptomatic adults, presents a different clinical scenario than that characterized by Chiari, making application of Chiari's original classification scheme often difficult. This article highlights Chiari's observations of cerebellar ectopia and those of other seminal figures, relating their findings to modern recognition of this entity.

CHIARI'S CLASSIFICATION OF CEREBELLAR ECTOPIA

Hans Chiari (1851-1916), born in Vienna, Austria, was the son of J. B. V. L. Chiari, an Austrian gynecologist, and the brother of Ottokar Chiari, a rhinolaryngologist. After graduating in 1875, Chiari became an assistant to Karl Rokitansky, the famous pathologist at the Institute of Pathology in Vienna. . . . [Full Text of this Article]

ARNOLD'S OBSERVATIONS ON RHOMBENCEPHALON DEFORMITY

CLINICAL CORRELATIONS: NEW FINDINGS OF INCIDENTAL CEREBELLAR ECTOPIA

From South Suburban Neurology, Ltd, Flossmoor, Ill.