Hennebert’s sign due to intralabyrinthine schwannoma – case report
Raymond van de Berg, Milou van Orsouw, Walter Jakub Szweryn, Jérôme Joseph Waterval, Alida Annechien Postma, Henricus Petrus Maria Kunst, Joost Johannes Antonius Stultiens · 2026
Read Hennebert’s sign due to intralabyrinthine schwannoma – case report by Raymond van de Berg, Milou van Orsouw, Walter Jakub Szweryn, Jérôme Joseph Waterval, Alida Annechien Postma, Henricus Petrus Maria Kunst, Joost Johannes Antonius Stultiens (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13388420.txt.
Description
Raymond van de Berg and six co-authors reported a 2026 case where careful bedside testing exposed a hidden inner ear tumor. A patient at a specialty dizziness clinic had one-sided balance weakness and profound hearing loss in the left ear. Pressing air into that ear canal with a balloon triggered eye movements, a response called Hennebert's sign, which hints that pressure is leaking into the inner ear.
CT imaging looked normal. MRI then revealed a schwannoma, a benign nerve sheath tumor, sitting inside the labyrinth: it filled turns of the cochlea, reached the balance chamber, and touched the stapes bone. The authors stress detailed balance testing, since the pressure sign gave unique evidence of this rare tumor's presence.
Catalog record
| CREATOR | Raymond van de Berg, Milou van Orsouw, Walter Jakub Szweryn, Jérôme Joseph Waterval, Alida Annechien Postma, Henricus Petrus Maria Kunst, Joost Johannes Antonius Stultiens |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 15 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |