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Gene positive for Huntington's disease. Early symptoms.
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The caudate nuclei and the putamen, are volume-depleted as demonstrated on segmented volumetric scans as well as the with a frontal horn to intercaudate ratio of 1.57 (normal 2.2-2.6), and intercaudate to inner table ratio 0.19 (normal 0.09-0.12).
The remainder of the brain is unremarkable in appearance. No intra-axial or extra-axial collection, mass or focal abnormality. No chronic small vessel ischemic change or susceptibility induced signal loss.
Conclusion: Volume loss of the caudate nuclei and putamen is consistent Huntington's disease.
I'm not generally a big believer in measurements, however, in Huntington's disease, the frontal horn to intercaudate ratio (FH:CC) and intercaudate to inner table ratio (CC:IT) are useful.