Objective: to discuss the clinical manifestation, diagnosis and treatment of thyroid gland disease secondary to Langerhans cell histiocytosis.

目的：探讨郎罕氏组织细胞增多症累及甲状腺的临床表现，诊治及预后。

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Hypertrophic osteopathy is a bone disease secondary to disease in the lungs. It is characterized by new bone formation on the outside of the long bones.

肥大性骨病是肺病的继发性疾病，其特征为主干骨外侧增生新的骨骼。

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Herpes simplex keratitis can occur in the context of primary herpes simplex virus infection but is observed more frequently in secondary or recurrent disease.

单纯疱疹性角膜炎可以原发性单纯疱疹病毒感染的形式发生，但其一般常继发于其它疾病或反复发作。

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When the disease changes to Secondary Progressive, the disease begins to grow worse.

VOA: special.2009.01.06

Usually after a decade or so, half of patients with this type of MS will develop secondary progressive disease where the symptoms get gradually worse and there are no or very few periods of remission.

BBC: Simple eye scan can reveal extent of Multiple Sclerosis

Rather, they conclude that "Oscar Wilde died of meningoencephalitis secondary to chronic right middle-ear disease".

BBC: Oscar Wilde 'died from ear infection'

This secondary sequence would trigger a fast-acting neuro-destructive disease that produced memory loss and, eventually, death.

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