Non-contrast axial CT brain of a 56 years-old male shows calcification (arrows) of the head of caudate nucleus bilaterally (A-B). Calcification in this location and other part of basal ganglia can be seen incidentally in older individuals and generally considered to be of no clinical significance. However, entities like Fahr disease, lead and carbon monoxide poisoning, tuberculosis, neuro-cysticercosis, toxoplasmosis and some metabolic disorders (e.g. hypo and hyperparathyroidism etc.) can also result in calcification