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[Confirmation of cortical lesions of progressive prosopagnosia by cerebral SPECT]
A Durán Ferreras1, P Duque San Juan, E Durán Ferreras
1Servicio de Medicina Nuclear, Hospital Universitario Virgen Macarena, Sevilla. andresduran76@hotmail.com
Abstract:
We present the case of a 78 year old man admitted to the hospital with progressive memory disorder. Neuropsychological examination showed inability to recognize familiar faces (prosopagnosia). MRI documented cortical atrophy, which did not explain the neurological deficit. CT did not show abnormalities. Most patients with prosopagnosia present brain atrophy, as they are more than 65 years old. Scanning by SPECT revealed hypoperfusion in the right parietotemporal region, which was worse in a later examination.
Insights
This case study highlights a 78-year-old man with progressive memory loss and prosopagnosia. SPECT imaging revealed right parietotemporal hypoperfusion, indicating a potential cause for his facial recognition deficit.
Area of Science:
- Neurology
- Neuroimaging
Background:
- Prosopagnosia, the inability to recognize familiar faces, is often associated with brain atrophy in older adults.
- This case involves a 78-year-old male presenting with progressive memory disorder and prosopagnosia.
Observation:
- Standard MRI showed cortical atrophy, but it did not fully account for the observed neurological deficit.
- CT scans revealed no significant abnormalities.
- SPECT scanning demonstrated hypoperfusion in the right parietotemporal region, a finding that worsened over time.
Findings:
- SPECT imaging identified significant hypoperfusion in the right parietotemporal region, correlating with the patient's prosopagnosia.
- The observed hypoperfusion was progressive, suggesting a dynamic pathological process.
Implications:
- This case underscores the utility of SPECT imaging in diagnosing prosopagnosia when structural imaging is inconclusive.
- Findings suggest that hypoperfusion in the right parietotemporal cortex may be a key factor in developing prosopagnosia, even without significant structural atrophy.
- Further research into the role of regional cerebral blood flow in facial recognition disorders is warranted.
