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Clinical Reasoning: An 80-Year-Old Woman With a Homonymous Hemianopsia
Deena Tajfirouz1, John J Chen1, M Tariq Bhatti2
1From the Department of Ophthalmology (D.T., J.J.C., M.T.B.), Mayo Clinic College of Medicine; and Department of Neurology (J.J.C., M.T.B.), Mayo Clinic College of Medicine. Dr. Bhatti is currently affiliated with The Permanente Medical Group, Northern California.
Abstract:
An 80-year-old woman who was experiencing visual symptoms for 2 years was found to have a left homonymous hemianopsia (HH). On further evaluation the following month, she was noted to have simultanagnosia and alexia. MRI of the brain did not reveal a structural etiology for the symptoms. [18F]-fluorodeoxyglucose (FDG) PET-CT was performed to aid in the diagnostic investigation. This case of posterior cortical atrophy highlights the differential diagnosis of a HH in the absence of a structural lesion on MRI and the role of FDG PET-CT imaging in such patients.
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