The incredible shrinking brain.

A 65-year-old white woman developed progressive visuospatial abnormalities over an eight-year course, secondary to Alzheimer's disease with amyloid angiopathy. Imaging studies demonstrated focal atrophy of the parietal and occipital lobes without hemorrhage. This patient manifested simultagnosia without ocular dysmetria or optic ataxia; hence, a true Balint's syndrome was not present. Her visual acuities and fields have remained stable status post-occipital lobe biopsy.