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Fahr syndrome due to congenital hypoparathyroidism (CT)

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Noncontrast CT of the brain (axial CT images) in an 11-year-old boy with Fahr syndrome due to congenital hypoparathyroidism. (1) Arc-shaped calcifications at the junction of gray matter and white matter (arrow). (2) Coarse calcifications localized within the caudate nuclei (indicated by the blue arrow), lentiform nuclei (marked by the red arrow), and pulvinar regions (circled). (3) Fine, low-density calcifications localized within the dentate nuclei of the cerebellum (indicated by the arrow). (4) Noncontrast CT scan using a bone window reveals densities comparable to those of the previously mentioned calcifications. (From: Kassal G, Elqadiri R, Mghar S, et al. Unveiling Fahr's syndrome in a child: a case linked to congenital hypoparathyroidism. Cureus 2025;17[5]:e84001. Creative Commons Attribution 4.0 International [CC BY 4.0] license, creativecommons.org/licenses/by/4.0.)