Idiopathic CDI accounted for 52%. CDI caused by tumor in sella region accounted for about 33% among the child and youngster cases, among which germinoma made up about 65%.

• CDI病因中特发性尿崩症占52%25,儿童青少年时期鞍区肿瘤占33%25,其中以生殖细胞瘤为主,占65%25;