Can the hummingbird sign contribute to the diagnosis of idiopathic normal pressure hydrocephalus?

BACKGROUND

We read with great interest the article by Atalay et al. in which they illustrate the frequent presence of hummingbird signs in their patient group with idiopathic normal pressure hydrocephalus (iNPH) [1]. The results are substantially interesting; however, we believe that some points may be further deliberated for a better understanding of this crucial study.

DISCUSSION: The authors declare that there are no commercial, financial, and other relationships in any way related to the subject of this article that might create any potential conflict of interest.