“Hippocampal Malrotation”: No Real Malrotation and Not Rare

R Raininko,D Bajic

doi:10.3174/ajnr.a2013

Abstract

We read with great interest the article relating to hippocampal malrotation (HIMAL) by Gamss et al.[1][1] We did, however, find some of the terminology questionable. In particular, we thought that “incomplete hippocampal inversion” (IHI) would be a better descriptive term because the hippocampus

Highlights

We read with great interest the article relating to hippocampal malrotation (HIMAL) by Gamss et al.[1]
Various terms have been used for incomplete hippocampal inversion” (IHI), and the authors may not have checked for terms other than HIMAL in their literature search
We found IHI in 18%–19% of the subjects in populations of healthy volunteers and patients without epilepsy or obvious developmental brain anomalies.[3,4]

Summary

Introduction

We read with great interest the article relating to hippocampal malrotation (HIMAL) by Gamss et al.[1]. Various terms have been used for IHI, and the authors may not have checked for terms other than HIMAL in their literature search.

Results

Conclusion