A 63-year-old right-handed man was referred for a neurologic consultation for difficulties with word finding. The patient could not name familiar objects and had to resort to pointing at them. On examination, he scored a 25/30 on the Montreal Cognitive Assessment, revealing issues with visuospatial relations. In the clock-drawing test, he reversed the positions of 3 and 9. On the Boston Naming Test, he required phonemic cueing for objects such as “stethoscope” and “accordion.” Neuropsychological testing revealed moderately impaired visual sequencing and psychomotor speed. A magnetic resonance image demonstrated mild atrophy of the left occipital lobe (image A, arrow), suggesting a diagnosis of posterior cortical atrophy (PCA). Fluorodeoxyglucose positron emission tomography was ordered, and images revealed hypometabolism in bilateral occipital cortices, more on the left than on the right (image B), confirming the diagnosis of PCA.