• Michael J Yang, Tara Jayde Nail, and Jesse Winer.
• Department of Neurosurgery, Tufts Medical Center, Boston, Massachusetts, USA.
• World Neurosurg. 2020 Oct 1; 142: 233-238.

BackgroundGerstmanns syndrome-a clinical constellation of left-right confusion, finger agnosia, agraphia, and acalculia-is frequently attributed to pathology in the dominant inferior parietal lobe or temporo-occipital region. However, these unique clinical findings are often accompanied by more subtle signs, including aphasias, neglect, and agnosias. Associative visual agnosia, in which a patient is able to accurately perceive and describe but not recognize an object or symbol, is a well-documented but infrequently observed clinical entity.Case DescriptionHere we detail 2 unique cases of patients who presented with the inability to recognize and use smartphone application icons. Both were found to have left temporo-occipital tumors displacing the left temporo-parietooccipital cortex.ConclusionsIn the era of pervasive technology, we emphasize that smartphone icon associative visual agnosias may be recognized by discerning physicians in the clinical diagnosis of dominant parietal lobe pathology.Copyright © 2020 Elsevier Inc. All rights reserved.

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