Related Experiment Video
Updated: Jul 6, 2026

A Unified Methodological Framework for Vestibular Schwannoma Research
Published on: June 20, 2017
HIV-associated cerebral lymphocyte infiltration mimicking vestibular schwannoma
Gentiana I Wenzel1, Friedrich Götz, Thomas Lenarz
1Department of Otorhinolaryngology, Medical University Hannover (MHH), Carl-Neuberg-Str. 1, 30625, Hannover, Germany. wenzel.gentiana@mh-hannover.de
Insights
A rare HIV-associated lymphoma mimicked a vestibular schwannoma (VS), presenting as hearing loss and a brain mass. Early HIV testing is crucial for atypical VS presentations to ensure correct diagnosis and treatment.
Area of Science:
- Neurology
- Oncology
- Infectious Diseases
Background:
- Vestibular schwannoma (VS) typically presents with unilateral hearing loss, tinnitus, and vestibular dysfunction, often visualized as a contrast-enhancing mass on MRI.
- Rapidly progressive symptoms and mass growth can be atypical for VS, suggesting other pathologies.
Observation:
- A 36-year-old male with progressive unilateral hearing loss, tinnitus, and facial palsy initially diagnosed as sudden sensorineural hearing loss.
- MRI revealed a contrast-enhancing mass in the internal auditory meatus, initially suspected as VS.
- Rapid evolution of leptomeningeal lymphocyte infiltration led to the diagnosis of HIV infection.
Findings:
- The case highlights HIV-associated cerebral lymphocyte infiltration, likely malignant lymphoma, mimicking a vestibular schwannoma.
- Unilateral, rapidly progressive hearing loss and a fast-growing cerebellopontine mass are highly suspicious of malignancy in the context of HIV.
Implications:
- This case underscores the importance of considering HIV infection in the differential diagnosis of atypical vestibular schwannoma presentations.
- Prompt HIV testing is recommended for patients with rapidly progressing unilateral hearing loss and cerebellopontine angle masses.
- Early diagnosis and treatment of HIV-associated central nervous system lymphoma are critical for patient outcomes.
Abstract:
The association of unilateral, rapidly progressive hearing loss, tinnitus and vestibular dysfunction in combination with a contrast-enhancing mass within the internal auditory canal on MRI is suggestive of a vestibular schwannoma (VS). We report the rare finding of a HIV-associated cerebral lymphocyte infiltration, most probably malignant lymphoma, which was presumed initially to be a VS. A 36-year-old male presented with progressive unilateral hearing loss accompanied by acute, ipsilateral tinnitus. Interpreted first as sudden sensorineural hearing loss, his symptoms were treated with rheologic therapy. Ipsilateral facial palsy appeared. MRI with gadolininium disclosed a contrast-enhancing mass within the internal auditory meatus of the left side. Within five weeks an extended leptomeningeal lymphocyte infiltration evolved and the diagnosis of an underlying HIV infection was made. Unilateral, rapidly progressive hearing loss and a fast growing cerebello-pontine mass is atypical for VS and highly suspicious of malignant disease. To our knowledge we report the first case of an HIV-associated cerebral lymphocyte infiltration, mimicking a VS. In such cases the diagnostic work-up should include a HIV test.
Related Concept Videos
Cryptococcal Meningitis
Encephalitis ll: Pathophysiology
Viral Meningitis
Cerebral Edema ll: Pathophysiology
Encephalitis l: Introduction
Cerebral Edema l: Introduction
