明显的脑室扩张是因为Huntington病时二乙基溴乙酰胺丧失使尾状核头萎缩，常染色体显性遗传，临床上伴有典型的舞蹈症。
The apparent enlargement of the ventricles seen here is due to atrophy of the head of the caudate from neuronal loss with Huntington's disease, an autosomal dominant condition characterized clinically by choreiform movements.